1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /* AF_RXRPC internal definitions
4 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
5 * Written by David Howells (dhowells@redhat.com)
8 #include <linux/atomic.h>
9 #include <linux/seqlock.h>
10 #include <linux/win_minmax.h>
11 #include <net/net_namespace.h>
12 #include <net/netns/generic.h>
14 #include <net/af_rxrpc.h>
18 #define CHECK_SLAB_OKAY(X) \
19 BUG_ON(atomic_read((X)) >> (sizeof(atomic_t) - 2) == \
20 (POISON_FREE << 8 | POISON_FREE))
22 #define CHECK_SLAB_OKAY(X) do {} while (0)
25 #define FCRYPT_BSIZE 8
31 } __attribute__((aligned(8)));
33 #define rxrpc_queue_work(WS) queue_work(rxrpc_workqueue, (WS))
34 #define rxrpc_queue_delayed_work(WS,D) \
35 queue_delayed_work(rxrpc_workqueue, (WS), (D))
37 struct rxrpc_connection;
40 * Mark applied to socket buffers in skb->mark. skb->priority is used
41 * to pass supplementary information.
44 RXRPC_SKB_MARK_REJECT_BUSY, /* Reject with BUSY */
45 RXRPC_SKB_MARK_REJECT_ABORT, /* Reject with ABORT (code in skb->priority) */
49 * sk_state for RxRPC sockets
53 RXRPC_CLIENT_UNBOUND, /* Unbound socket used as client */
54 RXRPC_CLIENT_BOUND, /* client local address bound */
55 RXRPC_SERVER_BOUND, /* server local address bound */
56 RXRPC_SERVER_BOUND2, /* second server local address bound */
57 RXRPC_SERVER_LISTENING, /* server listening for connections */
58 RXRPC_SERVER_LISTEN_DISABLED, /* server listening disabled */
59 RXRPC_CLOSE, /* socket is being closed */
63 * Per-network namespace data.
66 struct proc_dir_entry *proc_net; /* Subdir in /proc/net */
67 u32 epoch; /* Local epoch for detecting local-end reset */
68 struct list_head calls; /* List of calls active in this namespace */
69 rwlock_t call_lock; /* Lock for ->calls */
70 atomic_t nr_calls; /* Count of allocated calls */
73 struct list_head conn_proc_list; /* List of conns in this namespace for proc */
74 struct list_head service_conns; /* Service conns in this namespace */
75 rwlock_t conn_lock; /* Lock for ->conn_proc_list, ->service_conns */
76 struct work_struct service_conn_reaper;
77 struct timer_list service_conn_reap_timer;
79 unsigned int nr_client_conns;
80 unsigned int nr_active_client_conns;
81 bool kill_all_client_conns;
83 spinlock_t client_conn_cache_lock; /* Lock for ->*_client_conns */
84 spinlock_t client_conn_discard_lock; /* Prevent multiple discarders */
85 struct list_head waiting_client_conns;
86 struct list_head active_client_conns;
87 struct list_head idle_client_conns;
88 struct work_struct client_conn_reaper;
89 struct timer_list client_conn_reap_timer;
91 struct list_head local_endpoints;
92 struct mutex local_mutex; /* Lock for ->local_endpoints */
94 DECLARE_HASHTABLE (peer_hash, 10);
95 spinlock_t peer_hash_lock; /* Lock for ->peer_hash */
97 #define RXRPC_KEEPALIVE_TIME 20 /* NAT keepalive time in seconds */
98 u8 peer_keepalive_cursor;
99 time64_t peer_keepalive_base;
100 struct list_head peer_keepalive[32];
101 struct list_head peer_keepalive_new;
102 struct timer_list peer_keepalive_timer;
103 struct work_struct peer_keepalive_work;
107 * Service backlog preallocation.
109 * This contains circular buffers of preallocated peers, connections and calls
110 * for incoming service calls and their head and tail pointers. This allows
111 * calls to be set up in the data_ready handler, thereby avoiding the need to
112 * shuffle packets around so much.
114 struct rxrpc_backlog {
115 unsigned short peer_backlog_head;
116 unsigned short peer_backlog_tail;
117 unsigned short conn_backlog_head;
118 unsigned short conn_backlog_tail;
119 unsigned short call_backlog_head;
120 unsigned short call_backlog_tail;
121 #define RXRPC_BACKLOG_MAX 32
122 struct rxrpc_peer *peer_backlog[RXRPC_BACKLOG_MAX];
123 struct rxrpc_connection *conn_backlog[RXRPC_BACKLOG_MAX];
124 struct rxrpc_call *call_backlog[RXRPC_BACKLOG_MAX];
128 * RxRPC socket definition
131 /* WARNING: sk has to be the first member */
133 rxrpc_notify_new_call_t notify_new_call; /* Func to notify of new call */
134 rxrpc_discard_new_call_t discard_new_call; /* Func to discard a new call */
135 struct rxrpc_local *local; /* local endpoint */
136 struct rxrpc_backlog *backlog; /* Preallocation for services */
137 spinlock_t incoming_lock; /* Incoming call vs service shutdown lock */
138 struct list_head sock_calls; /* List of calls owned by this socket */
139 struct list_head to_be_accepted; /* calls awaiting acceptance */
140 struct list_head recvmsg_q; /* Calls awaiting recvmsg's attention */
141 rwlock_t recvmsg_lock; /* Lock for recvmsg_q */
142 struct key *key; /* security for this socket */
143 struct key *securities; /* list of server security descriptors */
144 struct rb_root calls; /* User ID -> call mapping */
146 #define RXRPC_SOCK_CONNECTED 0 /* connect_srx is set */
147 rwlock_t call_lock; /* lock for calls */
148 u32 min_sec_level; /* minimum security level */
149 #define RXRPC_SECURITY_MAX RXRPC_SECURITY_ENCRYPT
150 bool exclusive; /* Exclusive connection for a client socket */
151 u16 second_service; /* Additional service bound to the endpoint */
153 /* Service upgrade information */
154 u16 from; /* Service ID to upgrade (if not 0) */
155 u16 to; /* service ID to upgrade to */
157 sa_family_t family; /* Protocol family created with */
158 struct sockaddr_rxrpc srx; /* Primary Service/local addresses */
159 struct sockaddr_rxrpc connect_srx; /* Default client address from connect() */
162 #define rxrpc_sk(__sk) container_of((__sk), struct rxrpc_sock, sk)
165 * CPU-byteorder normalised Rx packet header.
167 struct rxrpc_host_header {
168 u32 epoch; /* client boot timestamp */
169 u32 cid; /* connection and channel ID */
170 u32 callNumber; /* call ID (0 for connection-level packets) */
171 u32 seq; /* sequence number of pkt in call stream */
172 u32 serial; /* serial number of pkt sent to network */
173 u8 type; /* packet type */
174 u8 flags; /* packet flags */
175 u8 userStatus; /* app-layer defined status */
176 u8 securityIndex; /* security protocol ID */
178 u16 _rsvd; /* reserved */
179 u16 cksum; /* kerberos security checksum */
181 u16 serviceId; /* service ID */
185 * RxRPC socket buffer private variables
186 * - max 48 bytes (struct sk_buff::cb)
188 struct rxrpc_skb_priv {
189 atomic_t nr_ring_pins; /* Number of rxtx ring pins */
190 u8 nr_subpackets; /* Number of subpackets */
191 u8 rx_flags; /* Received packet flags */
192 #define RXRPC_SKB_INCL_LAST 0x01 /* - Includes last packet */
193 #define RXRPC_SKB_TX_BUFFER 0x02 /* - Is transmit buffer */
195 int remain; /* amount of space remaining for next write */
197 /* List of requested ACKs on subpackets */
198 unsigned long rx_req_ack[(RXRPC_MAX_NR_JUMBO + BITS_PER_LONG - 1) /
202 struct rxrpc_host_header hdr; /* RxRPC packet header from this packet */
205 #define rxrpc_skb(__skb) ((struct rxrpc_skb_priv *) &(__skb)->cb)
208 * RxRPC security module interface
210 struct rxrpc_security {
211 const char *name; /* name of this service */
212 u8 security_index; /* security type provided */
213 u32 no_key_abort; /* Abort code indicating no key */
215 /* Initialise a security service */
218 /* Clean up a security service */
221 /* initialise a connection's security */
222 int (*init_connection_security)(struct rxrpc_connection *);
224 /* prime a connection's packet security */
225 int (*prime_packet_security)(struct rxrpc_connection *);
227 /* impose security on a packet */
228 int (*secure_packet)(struct rxrpc_call *,
233 /* verify the security on a received packet */
234 int (*verify_packet)(struct rxrpc_call *, struct sk_buff *,
235 unsigned int, unsigned int, rxrpc_seq_t, u16);
237 /* Free crypto request on a call */
238 void (*free_call_crypto)(struct rxrpc_call *);
240 /* Locate the data in a received packet that has been verified. */
241 void (*locate_data)(struct rxrpc_call *, struct sk_buff *,
242 unsigned int *, unsigned int *);
244 /* issue a challenge */
245 int (*issue_challenge)(struct rxrpc_connection *);
247 /* respond to a challenge */
248 int (*respond_to_challenge)(struct rxrpc_connection *,
252 /* verify a response */
253 int (*verify_response)(struct rxrpc_connection *,
257 /* clear connection security */
258 void (*clear)(struct rxrpc_connection *);
262 * RxRPC local transport endpoint description
263 * - owned by a single AF_RXRPC socket
264 * - pointed to by transport socket struct sk_user_data
268 atomic_t active_users; /* Number of users of the local endpoint */
269 atomic_t usage; /* Number of references to the structure */
270 struct rxrpc_net *rxnet; /* The network ns in which this resides */
271 struct list_head link;
272 struct socket *socket; /* my UDP socket */
273 struct work_struct processor;
274 struct rxrpc_sock __rcu *service; /* Service(s) listening on this endpoint */
275 struct rw_semaphore defrag_sem; /* control re-enablement of IP DF bit */
276 struct sk_buff_head reject_queue; /* packets awaiting rejection */
277 struct sk_buff_head event_queue; /* endpoint event packets awaiting processing */
278 struct rb_root client_conns; /* Client connections by socket params */
279 spinlock_t client_conns_lock; /* Lock for client_conns */
280 spinlock_t lock; /* access lock */
281 rwlock_t services_lock; /* lock for services list */
282 int debug_id; /* debug ID for printks */
284 bool service_closed; /* Service socket closed */
285 struct sockaddr_rxrpc srx; /* local address */
289 * RxRPC remote transport endpoint definition
290 * - matched by local endpoint, remote port, address and protocol type
293 struct rcu_head rcu; /* This must be first */
295 unsigned long hash_key;
296 struct hlist_node hash_link;
297 struct rxrpc_local *local;
298 struct hlist_head error_targets; /* targets for net error distribution */
299 struct rb_root service_conns; /* Service connections */
300 struct list_head keepalive_link; /* Link in net->peer_keepalive[] */
301 time64_t last_tx_at; /* Last time packet sent here */
302 seqlock_t service_conn_lock;
303 spinlock_t lock; /* access lock */
304 unsigned int if_mtu; /* interface MTU for this peer */
305 unsigned int mtu; /* network MTU for this peer */
306 unsigned int maxdata; /* data size (MTU - hdrsize) */
307 unsigned short hdrsize; /* header size (IP + UDP + RxRPC) */
308 int debug_id; /* debug ID for printks */
309 struct sockaddr_rxrpc srx; /* remote address */
311 /* calculated RTT cache */
312 #define RXRPC_RTT_CACHE_SIZE 32
313 spinlock_t rtt_input_lock; /* RTT lock for input routine */
314 ktime_t rtt_last_req; /* Time of last RTT request */
315 unsigned int rtt_count; /* Number of samples we've got */
317 u32 srtt_us; /* smoothed round trip time << 3 in usecs */
318 u32 mdev_us; /* medium deviation */
319 u32 mdev_max_us; /* maximal mdev for the last rtt period */
320 u32 rttvar_us; /* smoothed mdev_max */
321 u32 rto_j; /* Retransmission timeout in jiffies */
322 u8 backoff; /* Backoff timeout */
324 u8 cong_cwnd; /* Congestion window size */
328 * Keys for matching a connection.
330 struct rxrpc_conn_proto {
333 u32 epoch; /* epoch of this connection */
334 u32 cid; /* connection ID */
340 struct rxrpc_conn_parameters {
341 struct rxrpc_local *local; /* Representation of local endpoint */
342 struct rxrpc_peer *peer; /* Remote endpoint */
343 struct key *key; /* Security details */
344 bool exclusive; /* T if conn is exclusive */
345 bool upgrade; /* T if service ID can be upgraded */
346 u16 service_id; /* Service ID for this connection */
347 u32 security_level; /* Security level selected */
351 * Bits in the connection flags.
353 enum rxrpc_conn_flag {
354 RXRPC_CONN_HAS_IDR, /* Has a client conn ID assigned */
355 RXRPC_CONN_IN_SERVICE_CONNS, /* Conn is in peer->service_conns */
356 RXRPC_CONN_IN_CLIENT_CONNS, /* Conn is in local->client_conns */
357 RXRPC_CONN_EXPOSED, /* Conn has extra ref for exposure */
358 RXRPC_CONN_DONT_REUSE, /* Don't reuse this connection */
359 RXRPC_CONN_COUNTED, /* Counted by rxrpc_nr_client_conns */
360 RXRPC_CONN_PROBING_FOR_UPGRADE, /* Probing for service upgrade */
361 RXRPC_CONN_FINAL_ACK_0, /* Need final ACK for channel 0 */
362 RXRPC_CONN_FINAL_ACK_1, /* Need final ACK for channel 1 */
363 RXRPC_CONN_FINAL_ACK_2, /* Need final ACK for channel 2 */
364 RXRPC_CONN_FINAL_ACK_3, /* Need final ACK for channel 3 */
367 #define RXRPC_CONN_FINAL_ACK_MASK ((1UL << RXRPC_CONN_FINAL_ACK_0) | \
368 (1UL << RXRPC_CONN_FINAL_ACK_1) | \
369 (1UL << RXRPC_CONN_FINAL_ACK_2) | \
370 (1UL << RXRPC_CONN_FINAL_ACK_3))
373 * Events that can be raised upon a connection.
375 enum rxrpc_conn_event {
376 RXRPC_CONN_EV_CHALLENGE, /* Send challenge packet */
380 * The connection cache state.
382 enum rxrpc_conn_cache_state {
383 RXRPC_CONN_CLIENT_INACTIVE, /* Conn is not yet listed */
384 RXRPC_CONN_CLIENT_WAITING, /* Conn is on wait list, waiting for capacity */
385 RXRPC_CONN_CLIENT_ACTIVE, /* Conn is on active list, doing calls */
386 RXRPC_CONN_CLIENT_UPGRADE, /* Conn is on active list, probing for upgrade */
387 RXRPC_CONN_CLIENT_CULLED, /* Conn is culled and delisted, doing calls */
388 RXRPC_CONN_CLIENT_IDLE, /* Conn is on idle list, doing mostly nothing */
389 RXRPC_CONN__NR_CACHE_STATES
393 * The connection protocol state.
395 enum rxrpc_conn_proto_state {
396 RXRPC_CONN_UNUSED, /* Connection not yet attempted */
397 RXRPC_CONN_CLIENT, /* Client connection */
398 RXRPC_CONN_SERVICE_PREALLOC, /* Service connection preallocation */
399 RXRPC_CONN_SERVICE_UNSECURED, /* Service unsecured connection */
400 RXRPC_CONN_SERVICE_CHALLENGING, /* Service challenging for security */
401 RXRPC_CONN_SERVICE, /* Service secured connection */
402 RXRPC_CONN_REMOTELY_ABORTED, /* Conn aborted by peer */
403 RXRPC_CONN_LOCALLY_ABORTED, /* Conn aborted locally */
404 RXRPC_CONN__NR_STATES
408 * RxRPC connection definition
409 * - matched by { local, peer, epoch, conn_id, direction }
410 * - each connection can only handle four simultaneous calls
412 struct rxrpc_connection {
413 struct rxrpc_conn_proto proto;
414 struct rxrpc_conn_parameters params;
418 struct list_head cache_link;
420 spinlock_t channel_lock;
421 unsigned char active_chans; /* Mask of active channels */
422 #define RXRPC_ACTIVE_CHANS_MASK ((1 << RXRPC_MAXCALLS) - 1)
423 struct list_head waiting_calls; /* Calls waiting for channels */
424 struct rxrpc_channel {
425 unsigned long final_ack_at; /* Time at which to issue final ACK */
426 struct rxrpc_call __rcu *call; /* Active call */
427 unsigned int call_debug_id; /* call->debug_id */
428 u32 call_id; /* ID of current call */
429 u32 call_counter; /* Call ID counter */
430 u32 last_call; /* ID of last call */
431 u8 last_type; /* Type of last packet */
436 } channels[RXRPC_MAXCALLS];
438 struct timer_list timer; /* Conn event timer */
439 struct work_struct processor; /* connection event processor */
441 struct rb_node client_node; /* Node in local->client_conns */
442 struct rb_node service_node; /* Node in peer->service_conns */
444 struct list_head proc_link; /* link in procfs list */
445 struct list_head link; /* link in master connection list */
446 struct sk_buff_head rx_queue; /* received conn-level packets */
447 const struct rxrpc_security *security; /* applied security module */
448 struct key *server_key; /* security for this service */
449 struct crypto_sync_skcipher *cipher; /* encryption handle */
450 struct rxrpc_crypt csum_iv; /* packet checksum base */
452 unsigned long events;
453 unsigned long idle_timestamp; /* Time at which last became idle */
454 spinlock_t state_lock; /* state-change lock */
455 enum rxrpc_conn_cache_state cache_state;
456 enum rxrpc_conn_proto_state state; /* current state of connection */
457 u32 abort_code; /* Abort code of connection abort */
458 int debug_id; /* debug ID for printks */
459 atomic_t serial; /* packet serial number counter */
460 unsigned int hi_serial; /* highest serial number received */
461 u32 security_nonce; /* response re-use preventer */
462 u32 service_id; /* Service ID, possibly upgraded */
463 u8 size_align; /* data size alignment (for security) */
464 u8 security_size; /* security header size */
465 u8 security_ix; /* security type */
466 u8 out_clientflag; /* RXRPC_CLIENT_INITIATED if we are client */
467 short error; /* Local error code */
470 static inline bool rxrpc_to_server(const struct rxrpc_skb_priv *sp)
472 return sp->hdr.flags & RXRPC_CLIENT_INITIATED;
475 static inline bool rxrpc_to_client(const struct rxrpc_skb_priv *sp)
477 return !rxrpc_to_server(sp);
481 * Flags in call->flags.
483 enum rxrpc_call_flag {
484 RXRPC_CALL_RELEASED, /* call has been released - no more message to userspace */
485 RXRPC_CALL_HAS_USERID, /* has a user ID attached */
486 RXRPC_CALL_IS_SERVICE, /* Call is service call */
487 RXRPC_CALL_EXPOSED, /* The call was exposed to the world */
488 RXRPC_CALL_RX_LAST, /* Received the last packet (at rxtx_top) */
489 RXRPC_CALL_TX_LAST, /* Last packet in Tx buffer (at rxtx_top) */
490 RXRPC_CALL_SEND_PING, /* A ping will need to be sent */
491 RXRPC_CALL_RETRANS_TIMEOUT, /* Retransmission due to timeout occurred */
492 RXRPC_CALL_BEGAN_RX_TIMER, /* We began the expect_rx_by timer */
493 RXRPC_CALL_RX_HEARD, /* The peer responded at least once to this call */
494 RXRPC_CALL_RX_UNDERRUN, /* Got data underrun */
495 RXRPC_CALL_DISCONNECTED, /* The call has been disconnected */
499 * Events that can be raised on a call.
501 enum rxrpc_call_event {
502 RXRPC_CALL_EV_ACK, /* need to generate ACK */
503 RXRPC_CALL_EV_ABORT, /* need to generate abort */
504 RXRPC_CALL_EV_RESEND, /* Tx resend required */
505 RXRPC_CALL_EV_PING, /* Ping send required */
506 RXRPC_CALL_EV_EXPIRED, /* Expiry occurred */
507 RXRPC_CALL_EV_ACK_LOST, /* ACK may be lost, send ping */
511 * The states that a call can be in.
513 enum rxrpc_call_state {
514 RXRPC_CALL_UNINITIALISED,
515 RXRPC_CALL_CLIENT_AWAIT_CONN, /* - client waiting for connection to become available */
516 RXRPC_CALL_CLIENT_SEND_REQUEST, /* - client sending request phase */
517 RXRPC_CALL_CLIENT_AWAIT_REPLY, /* - client awaiting reply */
518 RXRPC_CALL_CLIENT_RECV_REPLY, /* - client receiving reply phase */
519 RXRPC_CALL_SERVER_PREALLOC, /* - service preallocation */
520 RXRPC_CALL_SERVER_SECURING, /* - server securing request connection */
521 RXRPC_CALL_SERVER_ACCEPTING, /* - server accepting request */
522 RXRPC_CALL_SERVER_RECV_REQUEST, /* - server receiving request */
523 RXRPC_CALL_SERVER_ACK_REQUEST, /* - server pending ACK of request */
524 RXRPC_CALL_SERVER_SEND_REPLY, /* - server sending reply */
525 RXRPC_CALL_SERVER_AWAIT_ACK, /* - server awaiting final ACK */
526 RXRPC_CALL_COMPLETE, /* - call complete */
527 NR__RXRPC_CALL_STATES
531 * Call completion condition (state == RXRPC_CALL_COMPLETE).
533 enum rxrpc_call_completion {
534 RXRPC_CALL_SUCCEEDED, /* - Normal termination */
535 RXRPC_CALL_REMOTELY_ABORTED, /* - call aborted by peer */
536 RXRPC_CALL_LOCALLY_ABORTED, /* - call aborted locally on error or close */
537 RXRPC_CALL_LOCAL_ERROR, /* - call failed due to local error */
538 RXRPC_CALL_NETWORK_ERROR, /* - call terminated by network error */
539 NR__RXRPC_CALL_COMPLETIONS
543 * Call Tx congestion management modes.
545 enum rxrpc_congest_mode {
546 RXRPC_CALL_SLOW_START,
547 RXRPC_CALL_CONGEST_AVOIDANCE,
548 RXRPC_CALL_PACKET_LOSS,
549 RXRPC_CALL_FAST_RETRANSMIT,
550 NR__RXRPC_CONGEST_MODES
554 * RxRPC call definition
555 * - matched by { connection, call_id }
559 struct rxrpc_connection *conn; /* connection carrying call */
560 struct rxrpc_peer *peer; /* Peer record for remote address */
561 struct rxrpc_sock __rcu *socket; /* socket responsible */
562 struct rxrpc_net *rxnet; /* Network namespace to which call belongs */
563 const struct rxrpc_security *security; /* applied security module */
564 struct mutex user_mutex; /* User access mutex */
565 unsigned long ack_at; /* When deferred ACK needs to happen */
566 unsigned long ack_lost_at; /* When ACK is figured as lost */
567 unsigned long resend_at; /* When next resend needs to happen */
568 unsigned long ping_at; /* When next to send a ping */
569 unsigned long keepalive_at; /* When next to send a keepalive ping */
570 unsigned long expect_rx_by; /* When we expect to get a packet by */
571 unsigned long expect_req_by; /* When we expect to get a request DATA packet by */
572 unsigned long expect_term_by; /* When we expect call termination by */
573 u32 next_rx_timo; /* Timeout for next Rx packet (jif) */
574 u32 next_req_timo; /* Timeout for next Rx request packet (jif) */
575 struct skcipher_request *cipher_req; /* Packet cipher request buffer */
576 struct timer_list timer; /* Combined event timer */
577 struct work_struct processor; /* Event processor */
578 rxrpc_notify_rx_t notify_rx; /* kernel service Rx notification function */
579 struct list_head link; /* link in master call list */
580 struct list_head chan_wait_link; /* Link in conn->waiting_calls */
581 struct hlist_node error_link; /* link in error distribution list */
582 struct list_head accept_link; /* Link in rx->acceptq */
583 struct list_head recvmsg_link; /* Link in rx->recvmsg_q */
584 struct list_head sock_link; /* Link in rx->sock_calls */
585 struct rb_node sock_node; /* Node in rx->calls */
586 struct sk_buff *tx_pending; /* Tx socket buffer being filled */
587 wait_queue_head_t waitq; /* Wait queue for channel or Tx */
588 s64 tx_total_len; /* Total length left to be transmitted (or -1) */
589 __be32 crypto_buf[2]; /* Temporary packet crypto buffer */
590 unsigned long user_call_ID; /* user-defined call ID */
592 unsigned long events;
594 spinlock_t notify_lock; /* Kernel notification lock */
595 rwlock_t state_lock; /* lock for state transition */
596 u32 abort_code; /* Local/remote abort code */
597 int error; /* Local error incurred */
598 enum rxrpc_call_state state; /* current state of call */
599 enum rxrpc_call_completion completion; /* Call completion condition */
601 u16 service_id; /* service ID */
602 u8 security_ix; /* Security type */
603 enum rxrpc_interruptibility interruptibility; /* At what point call may be interrupted */
604 u32 call_id; /* call ID on connection */
605 u32 cid; /* connection ID plus channel index */
606 int debug_id; /* debug ID for printks */
607 unsigned short rx_pkt_offset; /* Current recvmsg packet offset */
608 unsigned short rx_pkt_len; /* Current recvmsg packet len */
609 bool rx_pkt_last; /* Current recvmsg packet is last */
611 /* Rx/Tx circular buffer, depending on phase.
613 * In the Rx phase, packets are annotated with 0 or the number of the
614 * segment of a jumbo packet each buffer refers to. There can be up to
615 * 47 segments in a maximum-size UDP packet.
617 * In the Tx phase, packets are annotated with which buffers have been
620 #define RXRPC_RXTX_BUFF_SIZE 64
621 #define RXRPC_RXTX_BUFF_MASK (RXRPC_RXTX_BUFF_SIZE - 1)
622 #define RXRPC_INIT_RX_WINDOW_SIZE 63
623 struct sk_buff **rxtx_buffer;
624 u8 *rxtx_annotations;
625 #define RXRPC_TX_ANNO_ACK 0
626 #define RXRPC_TX_ANNO_UNACK 1
627 #define RXRPC_TX_ANNO_NAK 2
628 #define RXRPC_TX_ANNO_RETRANS 3
629 #define RXRPC_TX_ANNO_MASK 0x03
630 #define RXRPC_TX_ANNO_LAST 0x04
631 #define RXRPC_TX_ANNO_RESENT 0x08
633 #define RXRPC_RX_ANNO_SUBPACKET 0x3f /* Subpacket number in jumbogram */
634 #define RXRPC_RX_ANNO_VERIFIED 0x80 /* Set if verified and decrypted */
635 rxrpc_seq_t tx_hard_ack; /* Dead slot in buffer; the first transmitted but
636 * not hard-ACK'd packet follows this.
638 rxrpc_seq_t tx_top; /* Highest Tx slot allocated. */
639 u16 tx_backoff; /* Delay to insert due to Tx failure */
641 /* TCP-style slow-start congestion control [RFC5681]. Since the SMSS
642 * is fixed, we keep these numbers in terms of segments (ie. DATA
643 * packets) rather than bytes.
645 #define RXRPC_TX_SMSS RXRPC_JUMBO_DATALEN
646 u8 cong_cwnd; /* Congestion window size */
647 u8 cong_extra; /* Extra to send for congestion management */
648 u8 cong_ssthresh; /* Slow-start threshold */
649 enum rxrpc_congest_mode cong_mode:8; /* Congestion management mode */
650 u8 cong_dup_acks; /* Count of ACKs showing missing packets */
651 u8 cong_cumul_acks; /* Cumulative ACK count */
652 ktime_t cong_tstamp; /* Last time cwnd was changed */
654 rxrpc_seq_t rx_hard_ack; /* Dead slot in buffer; the first received but not
655 * consumed packet follows this.
657 rxrpc_seq_t rx_top; /* Highest Rx slot allocated. */
658 rxrpc_seq_t rx_expect_next; /* Expected next packet sequence number */
659 rxrpc_serial_t rx_serial; /* Highest serial received for this call */
660 u8 rx_winsize; /* Size of Rx window */
661 u8 tx_winsize; /* Maximum size of Tx window */
662 bool tx_phase; /* T if transmission phase, F if receive phase */
663 u8 nr_jumbo_bad; /* Number of jumbo dups/exceeds-windows */
665 spinlock_t input_lock; /* Lock for packet input to this call */
667 /* receive-phase ACK management */
668 u8 ackr_reason; /* reason to ACK */
669 rxrpc_serial_t ackr_serial; /* serial of packet being ACK'd */
670 rxrpc_serial_t ackr_first_seq; /* first sequence number received */
671 rxrpc_seq_t ackr_prev_seq; /* previous sequence number received */
672 rxrpc_seq_t ackr_consumed; /* Highest packet shown consumed */
673 rxrpc_seq_t ackr_seen; /* Highest packet shown seen */
676 rxrpc_serial_t rtt_serial[4]; /* Serial number of DATA or PING sent */
677 ktime_t rtt_sent_at[4]; /* Time packet sent */
678 unsigned long rtt_avail; /* Mask of available slots in bits 0-3,
679 * Mask of pending samples in 8-11 */
680 #define RXRPC_CALL_RTT_AVAIL_MASK 0xf
681 #define RXRPC_CALL_RTT_PEND_SHIFT 8
683 /* transmission-phase ACK management */
684 ktime_t acks_latest_ts; /* Timestamp of latest ACK received */
685 rxrpc_seq_t acks_lowest_nak; /* Lowest NACK in the buffer (or ==tx_hard_ack) */
686 rxrpc_seq_t acks_lost_top; /* tx_top at the time lost-ack ping sent */
687 rxrpc_serial_t acks_lost_ping; /* Serial number of probe ACK */
691 * Summary of a new ACK and the changes it made to the Tx buffer packet states.
693 struct rxrpc_ack_summary {
695 u8 nr_acks; /* Number of ACKs in packet */
696 u8 nr_nacks; /* Number of NACKs in packet */
697 u8 nr_new_acks; /* Number of new ACKs in packet */
698 u8 nr_new_nacks; /* Number of new NACKs in packet */
699 u8 nr_rot_new_acks; /* Number of rotated new ACKs */
700 bool new_low_nack; /* T if new low NACK found */
701 bool retrans_timeo; /* T if reTx due to timeout happened */
702 u8 flight_size; /* Number of unreceived transmissions */
703 /* Place to stash values for tracing */
704 enum rxrpc_congest_mode mode:8;
712 * sendmsg() cmsg-specified parameters.
715 RXRPC_CMD_SEND_DATA, /* send data message */
716 RXRPC_CMD_SEND_ABORT, /* request abort generation */
717 RXRPC_CMD_ACCEPT, /* [server] accept incoming call */
718 RXRPC_CMD_REJECT_BUSY, /* [server] reject a call as busy */
721 struct rxrpc_call_params {
722 s64 tx_total_len; /* Total Tx data length (if send data) */
723 unsigned long user_call_ID; /* User's call ID */
725 u32 hard; /* Maximum lifetime (sec) */
726 u32 idle; /* Max time since last data packet (msec) */
727 u32 normal; /* Max time since last call packet (msec) */
729 u8 nr_timeouts; /* Number of timeouts specified */
730 enum rxrpc_interruptibility interruptibility; /* How is interruptible is the call? */
733 struct rxrpc_send_params {
734 struct rxrpc_call_params call;
735 u32 abort_code; /* Abort code to Tx (if abort) */
736 enum rxrpc_command command : 8; /* The command to implement */
737 bool exclusive; /* Shared or exclusive call */
738 bool upgrade; /* If the connection is upgradeable */
741 #include <trace/events/rxrpc.h>
746 extern atomic_t rxrpc_n_tx_skbs, rxrpc_n_rx_skbs;
747 extern struct workqueue_struct *rxrpc_workqueue;
752 int rxrpc_service_prealloc(struct rxrpc_sock *, gfp_t);
753 void rxrpc_discard_prealloc(struct rxrpc_sock *);
754 struct rxrpc_call *rxrpc_new_incoming_call(struct rxrpc_local *,
757 void rxrpc_accept_incoming_calls(struct rxrpc_local *);
758 struct rxrpc_call *rxrpc_accept_call(struct rxrpc_sock *, unsigned long,
760 int rxrpc_reject_call(struct rxrpc_sock *);
765 void rxrpc_propose_ACK(struct rxrpc_call *, u8, u32, bool, bool,
766 enum rxrpc_propose_ack_trace);
767 void rxrpc_process_call(struct work_struct *);
769 static inline void rxrpc_reduce_call_timer(struct rxrpc_call *call,
770 unsigned long expire_at,
772 enum rxrpc_timer_trace why)
774 trace_rxrpc_timer(call, why, now);
775 timer_reduce(&call->timer, expire_at);
781 extern const char *const rxrpc_call_states[];
782 extern const char *const rxrpc_call_completions[];
783 extern unsigned int rxrpc_max_call_lifetime;
784 extern struct kmem_cache *rxrpc_call_jar;
786 struct rxrpc_call *rxrpc_find_call_by_user_ID(struct rxrpc_sock *, unsigned long);
787 struct rxrpc_call *rxrpc_alloc_call(struct rxrpc_sock *, gfp_t, unsigned int);
788 struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *,
789 struct rxrpc_conn_parameters *,
790 struct sockaddr_rxrpc *,
791 struct rxrpc_call_params *, gfp_t,
793 void rxrpc_incoming_call(struct rxrpc_sock *, struct rxrpc_call *,
795 void rxrpc_release_call(struct rxrpc_sock *, struct rxrpc_call *);
796 void rxrpc_release_calls_on_socket(struct rxrpc_sock *);
797 bool __rxrpc_queue_call(struct rxrpc_call *);
798 bool rxrpc_queue_call(struct rxrpc_call *);
799 void rxrpc_see_call(struct rxrpc_call *);
800 void rxrpc_get_call(struct rxrpc_call *, enum rxrpc_call_trace);
801 void rxrpc_put_call(struct rxrpc_call *, enum rxrpc_call_trace);
802 void rxrpc_cleanup_call(struct rxrpc_call *);
803 void rxrpc_destroy_all_calls(struct rxrpc_net *);
805 static inline bool rxrpc_is_service_call(const struct rxrpc_call *call)
807 return test_bit(RXRPC_CALL_IS_SERVICE, &call->flags);
810 static inline bool rxrpc_is_client_call(const struct rxrpc_call *call)
812 return !rxrpc_is_service_call(call);
818 extern unsigned int rxrpc_max_client_connections;
819 extern unsigned int rxrpc_reap_client_connections;
820 extern unsigned long rxrpc_conn_idle_client_expiry;
821 extern unsigned long rxrpc_conn_idle_client_fast_expiry;
822 extern struct idr rxrpc_client_conn_ids;
824 void rxrpc_destroy_client_conn_ids(void);
825 int rxrpc_connect_call(struct rxrpc_sock *, struct rxrpc_call *,
826 struct rxrpc_conn_parameters *, struct sockaddr_rxrpc *,
828 void rxrpc_expose_client_call(struct rxrpc_call *);
829 void rxrpc_disconnect_client_call(struct rxrpc_call *);
830 void rxrpc_put_client_conn(struct rxrpc_connection *);
831 void rxrpc_discard_expired_client_conns(struct work_struct *);
832 void rxrpc_destroy_all_client_connections(struct rxrpc_net *);
833 void rxrpc_clean_up_local_conns(struct rxrpc_local *);
838 void rxrpc_process_connection(struct work_struct *);
843 extern unsigned int rxrpc_connection_expiry;
844 extern unsigned int rxrpc_closed_conn_expiry;
846 struct rxrpc_connection *rxrpc_alloc_connection(gfp_t);
847 struct rxrpc_connection *rxrpc_find_connection_rcu(struct rxrpc_local *,
849 struct rxrpc_peer **);
850 void __rxrpc_disconnect_call(struct rxrpc_connection *, struct rxrpc_call *);
851 void rxrpc_disconnect_call(struct rxrpc_call *);
852 void rxrpc_kill_connection(struct rxrpc_connection *);
853 bool rxrpc_queue_conn(struct rxrpc_connection *);
854 void rxrpc_see_connection(struct rxrpc_connection *);
855 void rxrpc_get_connection(struct rxrpc_connection *);
856 struct rxrpc_connection *rxrpc_get_connection_maybe(struct rxrpc_connection *);
857 void rxrpc_put_service_conn(struct rxrpc_connection *);
858 void rxrpc_service_connection_reaper(struct work_struct *);
859 void rxrpc_destroy_all_connections(struct rxrpc_net *);
861 static inline bool rxrpc_conn_is_client(const struct rxrpc_connection *conn)
863 return conn->out_clientflag;
866 static inline bool rxrpc_conn_is_service(const struct rxrpc_connection *conn)
868 return !rxrpc_conn_is_client(conn);
871 static inline void rxrpc_put_connection(struct rxrpc_connection *conn)
876 if (rxrpc_conn_is_client(conn))
877 rxrpc_put_client_conn(conn);
879 rxrpc_put_service_conn(conn);
882 static inline void rxrpc_reduce_conn_timer(struct rxrpc_connection *conn,
883 unsigned long expire_at)
885 timer_reduce(&conn->timer, expire_at);
891 struct rxrpc_connection *rxrpc_find_service_conn_rcu(struct rxrpc_peer *,
893 struct rxrpc_connection *rxrpc_prealloc_service_connection(struct rxrpc_net *, gfp_t);
894 void rxrpc_new_incoming_connection(struct rxrpc_sock *, struct rxrpc_connection *,
895 const struct rxrpc_security *, struct key *,
897 void rxrpc_unpublish_service_conn(struct rxrpc_connection *);
902 int rxrpc_input_packet(struct sock *, struct sk_buff *);
907 extern const struct rxrpc_security rxrpc_no_security;
912 extern struct key_type key_type_rxrpc;
913 extern struct key_type key_type_rxrpc_s;
915 int rxrpc_request_key(struct rxrpc_sock *, sockptr_t , int);
916 int rxrpc_server_keyring(struct rxrpc_sock *, sockptr_t, int);
917 int rxrpc_get_server_data_key(struct rxrpc_connection *, const void *, time64_t,
923 extern void rxrpc_process_local_events(struct rxrpc_local *);
928 struct rxrpc_local *rxrpc_lookup_local(struct net *, const struct sockaddr_rxrpc *);
929 struct rxrpc_local *rxrpc_get_local(struct rxrpc_local *);
930 struct rxrpc_local *rxrpc_get_local_maybe(struct rxrpc_local *);
931 void rxrpc_put_local(struct rxrpc_local *);
932 struct rxrpc_local *rxrpc_use_local(struct rxrpc_local *);
933 void rxrpc_unuse_local(struct rxrpc_local *);
934 void rxrpc_queue_local(struct rxrpc_local *);
935 void rxrpc_destroy_all_locals(struct rxrpc_net *);
937 static inline bool __rxrpc_unuse_local(struct rxrpc_local *local)
939 return atomic_dec_return(&local->active_users) == 0;
942 static inline bool __rxrpc_use_local(struct rxrpc_local *local)
944 return atomic_fetch_add_unless(&local->active_users, 1, 0) != 0;
950 extern unsigned int rxrpc_max_backlog __read_mostly;
951 extern unsigned long rxrpc_requested_ack_delay;
952 extern unsigned long rxrpc_soft_ack_delay;
953 extern unsigned long 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;
958 extern const s8 rxrpc_ack_priority[];
963 extern unsigned int rxrpc_net_id;
964 extern struct pernet_operations rxrpc_net_ops;
966 static inline struct rxrpc_net *rxrpc_net(struct net *net)
968 return net_generic(net, rxrpc_net_id);
974 int rxrpc_send_ack_packet(struct rxrpc_call *, bool, rxrpc_serial_t *);
975 int rxrpc_send_abort_packet(struct rxrpc_call *);
976 int rxrpc_send_data_packet(struct rxrpc_call *, struct sk_buff *, bool);
977 void rxrpc_reject_packets(struct rxrpc_local *);
978 void rxrpc_send_keepalive(struct rxrpc_peer *);
983 void rxrpc_error_report(struct sock *);
984 void rxrpc_peer_keepalive_worker(struct work_struct *);
989 struct rxrpc_peer *rxrpc_lookup_peer_rcu(struct rxrpc_local *,
990 const struct sockaddr_rxrpc *);
991 struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_sock *, struct rxrpc_local *,
992 struct sockaddr_rxrpc *, gfp_t);
993 struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *, gfp_t);
994 void rxrpc_new_incoming_peer(struct rxrpc_sock *, struct rxrpc_local *,
995 struct rxrpc_peer *);
996 void rxrpc_destroy_all_peers(struct rxrpc_net *);
997 struct rxrpc_peer *rxrpc_get_peer(struct rxrpc_peer *);
998 struct rxrpc_peer *rxrpc_get_peer_maybe(struct rxrpc_peer *);
999 void rxrpc_put_peer(struct rxrpc_peer *);
1000 void rxrpc_put_peer_locked(struct rxrpc_peer *);
1005 extern const struct seq_operations rxrpc_call_seq_ops;
1006 extern const struct seq_operations rxrpc_connection_seq_ops;
1007 extern const struct seq_operations rxrpc_peer_seq_ops;
1012 void rxrpc_notify_socket(struct rxrpc_call *);
1013 bool __rxrpc_set_call_completion(struct rxrpc_call *, enum rxrpc_call_completion, u32, int);
1014 bool rxrpc_set_call_completion(struct rxrpc_call *, enum rxrpc_call_completion, u32, int);
1015 bool __rxrpc_call_completed(struct rxrpc_call *);
1016 bool rxrpc_call_completed(struct rxrpc_call *);
1017 bool __rxrpc_abort_call(const char *, struct rxrpc_call *, rxrpc_seq_t, u32, int);
1018 bool rxrpc_abort_call(const char *, struct rxrpc_call *, rxrpc_seq_t, u32, int);
1019 int rxrpc_recvmsg(struct socket *, struct msghdr *, size_t, int);
1022 * Abort a call due to a protocol error.
1024 static inline bool __rxrpc_abort_eproto(struct rxrpc_call *call,
1025 struct sk_buff *skb,
1026 const char *eproto_why,
1030 struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
1032 trace_rxrpc_rx_eproto(call, sp->hdr.serial, eproto_why);
1033 return rxrpc_abort_call(why, call, sp->hdr.seq, abort_code, -EPROTO);
1036 #define rxrpc_abort_eproto(call, skb, eproto_why, abort_why, abort_code) \
1037 __rxrpc_abort_eproto((call), (skb), tracepoint_string(eproto_why), \
1038 (abort_why), (abort_code))
1043 void rxrpc_peer_add_rtt(struct rxrpc_call *, enum rxrpc_rtt_rx_trace, int,
1044 rxrpc_serial_t, rxrpc_serial_t, ktime_t, ktime_t);
1045 unsigned long rxrpc_get_rto_backoff(struct rxrpc_peer *, bool);
1046 void rxrpc_peer_init_rtt(struct rxrpc_peer *);
1052 extern const struct rxrpc_security rxkad;
1058 int __init rxrpc_init_security(void);
1059 void rxrpc_exit_security(void);
1060 int rxrpc_init_client_conn_security(struct rxrpc_connection *);
1061 bool rxrpc_look_up_server_security(struct rxrpc_local *, struct rxrpc_sock *,
1062 const struct rxrpc_security **, struct key **,
1068 int rxrpc_do_sendmsg(struct rxrpc_sock *, struct msghdr *, size_t);
1073 void rxrpc_kernel_data_consumed(struct rxrpc_call *, struct sk_buff *);
1074 void rxrpc_packet_destructor(struct sk_buff *);
1075 void rxrpc_new_skb(struct sk_buff *, enum rxrpc_skb_trace);
1076 void rxrpc_see_skb(struct sk_buff *, enum rxrpc_skb_trace);
1077 void rxrpc_eaten_skb(struct sk_buff *, enum rxrpc_skb_trace);
1078 void rxrpc_get_skb(struct sk_buff *, enum rxrpc_skb_trace);
1079 void rxrpc_free_skb(struct sk_buff *, enum rxrpc_skb_trace);
1080 void rxrpc_purge_queue(struct sk_buff_head *);
1085 #ifdef CONFIG_SYSCTL
1086 extern int __init rxrpc_sysctl_init(void);
1087 extern void rxrpc_sysctl_exit(void);
1089 static inline int __init rxrpc_sysctl_init(void) { return 0; }
1090 static inline void rxrpc_sysctl_exit(void) {}
1096 int rxrpc_extract_addr_from_skb(struct sockaddr_rxrpc *, struct sk_buff *);
1098 static inline bool before(u32 seq1, u32 seq2)
1100 return (s32)(seq1 - seq2) < 0;
1102 static inline bool before_eq(u32 seq1, u32 seq2)
1104 return (s32)(seq1 - seq2) <= 0;
1106 static inline bool after(u32 seq1, u32 seq2)
1108 return (s32)(seq1 - seq2) > 0;
1110 static inline bool after_eq(u32 seq1, u32 seq2)
1112 return (s32)(seq1 - seq2) >= 0;
1118 extern unsigned int rxrpc_debug;
1120 #define dbgprintk(FMT,...) \
1121 printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__)
1123 #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__)
1124 #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__)
1125 #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__)
1126 #define kproto(FMT,...) dbgprintk("### "FMT ,##__VA_ARGS__)
1127 #define knet(FMT,...) dbgprintk("@@@ "FMT ,##__VA_ARGS__)
1130 #if defined(__KDEBUG)
1131 #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__)
1132 #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__)
1133 #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__)
1134 #define _proto(FMT,...) kproto(FMT,##__VA_ARGS__)
1135 #define _net(FMT,...) knet(FMT,##__VA_ARGS__)
1137 #elif defined(CONFIG_AF_RXRPC_DEBUG)
1138 #define RXRPC_DEBUG_KENTER 0x01
1139 #define RXRPC_DEBUG_KLEAVE 0x02
1140 #define RXRPC_DEBUG_KDEBUG 0x04
1141 #define RXRPC_DEBUG_KPROTO 0x08
1142 #define RXRPC_DEBUG_KNET 0x10
1144 #define _enter(FMT,...) \
1146 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KENTER)) \
1147 kenter(FMT,##__VA_ARGS__); \
1150 #define _leave(FMT,...) \
1152 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KLEAVE)) \
1153 kleave(FMT,##__VA_ARGS__); \
1156 #define _debug(FMT,...) \
1158 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KDEBUG)) \
1159 kdebug(FMT,##__VA_ARGS__); \
1162 #define _proto(FMT,...) \
1164 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KPROTO)) \
1165 kproto(FMT,##__VA_ARGS__); \
1168 #define _net(FMT,...) \
1170 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KNET)) \
1171 knet(FMT,##__VA_ARGS__); \
1175 #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__)
1176 #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__)
1177 #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__)
1178 #define _proto(FMT,...) no_printk("### "FMT ,##__VA_ARGS__)
1179 #define _net(FMT,...) no_printk("@@@ "FMT ,##__VA_ARGS__)
1183 * debug assertion checking
1185 #if 1 // defined(__KDEBUGALL)
1189 if (unlikely(!(X))) { \
1190 pr_err("Assertion failed\n"); \
1195 #define ASSERTCMP(X, OP, Y) \
1197 __typeof__(X) _x = (X); \
1198 __typeof__(Y) _y = (__typeof__(X))(Y); \
1199 if (unlikely(!(_x OP _y))) { \
1200 pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \
1201 (unsigned long)_x, (unsigned long)_x, #OP, \
1202 (unsigned long)_y, (unsigned long)_y); \
1207 #define ASSERTIF(C, X) \
1209 if (unlikely((C) && !(X))) { \
1210 pr_err("Assertion failed\n"); \
1215 #define ASSERTIFCMP(C, X, OP, Y) \
1217 __typeof__(X) _x = (X); \
1218 __typeof__(Y) _y = (__typeof__(X))(Y); \
1219 if (unlikely((C) && !(_x OP _y))) { \
1220 pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \
1221 (unsigned long)_x, (unsigned long)_x, #OP, \
1222 (unsigned long)_y, (unsigned long)_y); \
1233 #define ASSERTCMP(X, OP, Y) \
1237 #define ASSERTIF(C, X) \
1241 #define ASSERTIFCMP(C, X, OP, Y) \
1245 #endif /* __KDEBUGALL */