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 <net/net_namespace.h>
11 #include <net/netns/generic.h>
13 #include <net/af_rxrpc.h>
17 #define CHECK_SLAB_OKAY(X) \
18 BUG_ON(atomic_read((X)) >> (sizeof(atomic_t) - 2) == \
19 (POISON_FREE << 8 | POISON_FREE))
21 #define CHECK_SLAB_OKAY(X) do {} while (0)
24 #define FCRYPT_BSIZE 8
30 } __attribute__((aligned(8)));
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))
36 struct rxrpc_connection;
39 * Mark applied to socket buffers in skb->mark. skb->priority is used
40 * to pass supplementary information.
43 RXRPC_SKB_MARK_REJECT_BUSY, /* Reject with BUSY */
44 RXRPC_SKB_MARK_REJECT_ABORT, /* Reject with ABORT (code in skb->priority) */
48 * sk_state for RxRPC sockets
52 RXRPC_CLIENT_UNBOUND, /* Unbound socket used as client */
53 RXRPC_CLIENT_BOUND, /* client local address bound */
54 RXRPC_SERVER_BOUND, /* server local address bound */
55 RXRPC_SERVER_BOUND2, /* second server local address bound */
56 RXRPC_SERVER_LISTENING, /* server listening for connections */
57 RXRPC_SERVER_LISTEN_DISABLED, /* server listening disabled */
58 RXRPC_CLOSE, /* socket is being closed */
62 * Per-network namespace data.
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 */
69 atomic_t nr_calls; /* Count of allocated calls */
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 */
75 struct work_struct service_conn_reaper;
76 struct timer_list service_conn_reap_timer;
78 unsigned int nr_client_conns;
79 unsigned int nr_active_client_conns;
80 bool kill_all_client_conns;
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;
87 struct work_struct client_conn_reaper;
88 struct timer_list client_conn_reap_timer;
90 struct list_head local_endpoints;
91 struct mutex local_mutex; /* Lock for ->local_endpoints */
93 DECLARE_HASHTABLE (peer_hash, 10);
94 spinlock_t peer_hash_lock; /* Lock for ->peer_hash */
96 #define RXRPC_KEEPALIVE_TIME 20 /* NAT keepalive time in seconds */
97 u8 peer_keepalive_cursor;
98 time64_t peer_keepalive_base;
99 struct list_head peer_keepalive[32];
100 struct list_head peer_keepalive_new;
101 struct timer_list peer_keepalive_timer;
102 struct work_struct peer_keepalive_work;
106 * Service backlog preallocation.
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.
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];
127 * RxRPC socket definition
130 /* WARNING: sk has to be the first member */
132 rxrpc_notify_new_call_t notify_new_call; /* Func to notify of new call */
133 rxrpc_discard_new_call_t discard_new_call; /* Func to discard a new call */
134 struct rxrpc_local *local; /* local endpoint */
135 struct rxrpc_backlog *backlog; /* Preallocation for services */
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 */
141 struct key *key; /* security for this socket */
142 struct key *securities; /* list of server security descriptors */
143 struct rb_root calls; /* User ID -> call mapping */
145 #define RXRPC_SOCK_CONNECTED 0 /* connect_srx is set */
146 rwlock_t call_lock; /* lock for calls */
147 u32 min_sec_level; /* minimum security level */
148 #define RXRPC_SECURITY_MAX RXRPC_SECURITY_ENCRYPT
149 bool exclusive; /* Exclusive connection for a client socket */
150 u16 second_service; /* Additional service bound to the endpoint */
152 /* Service upgrade information */
153 u16 from; /* Service ID to upgrade (if not 0) */
154 u16 to; /* service ID to upgrade to */
156 sa_family_t family; /* Protocol family created with */
157 struct sockaddr_rxrpc srx; /* Primary Service/local addresses */
158 struct sockaddr_rxrpc connect_srx; /* Default client address from connect() */
161 #define rxrpc_sk(__sk) container_of((__sk), struct rxrpc_sock, sk)
164 * CPU-byteorder normalised Rx packet header.
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 */
177 u16 _rsvd; /* reserved */
178 u16 cksum; /* kerberos security checksum */
180 u16 serviceId; /* service ID */
184 * RxRPC socket buffer private variables
185 * - max 48 bytes (struct sk_buff::cb)
187 struct rxrpc_skb_priv {
188 u8 nr_subpackets; /* Number of subpackets */
189 u8 rx_flags; /* Received packet flags */
190 #define RXRPC_SKB_INCL_LAST 0x01 /* - Includes last packet */
192 int remain; /* amount of space remaining for next write */
194 /* List of requested ACKs on subpackets */
195 unsigned long rx_req_ack[(RXRPC_MAX_NR_JUMBO + BITS_PER_LONG - 1) /
199 struct rxrpc_host_header hdr; /* RxRPC packet header from this packet */
202 #define rxrpc_skb(__skb) ((struct rxrpc_skb_priv *) &(__skb)->cb)
205 * RxRPC security module interface
207 struct rxrpc_security {
208 const char *name; /* name of this service */
209 u8 security_index; /* security type provided */
211 /* Initialise a security service */
214 /* Clean up a security service */
217 /* initialise a connection's security */
218 int (*init_connection_security)(struct rxrpc_connection *);
220 /* prime a connection's packet security */
221 int (*prime_packet_security)(struct rxrpc_connection *);
223 /* impose security on a packet */
224 int (*secure_packet)(struct rxrpc_call *,
229 /* verify the security on a received packet */
230 int (*verify_packet)(struct rxrpc_call *, struct sk_buff *,
231 unsigned int, unsigned int, rxrpc_seq_t, u16);
233 /* Locate the data in a received packet that has been verified. */
234 void (*locate_data)(struct rxrpc_call *, struct sk_buff *,
235 unsigned int *, unsigned int *);
237 /* issue a challenge */
238 int (*issue_challenge)(struct rxrpc_connection *);
240 /* respond to a challenge */
241 int (*respond_to_challenge)(struct rxrpc_connection *,
245 /* verify a response */
246 int (*verify_response)(struct rxrpc_connection *,
250 /* clear connection security */
251 void (*clear)(struct rxrpc_connection *);
255 * RxRPC local transport endpoint description
256 * - owned by a single AF_RXRPC socket
257 * - pointed to by transport socket struct sk_user_data
261 atomic_t active_users; /* Number of users of the local endpoint */
262 atomic_t usage; /* Number of references to the structure */
263 struct rxrpc_net *rxnet; /* The network ns in which this resides */
264 struct list_head link;
265 struct socket *socket; /* my UDP socket */
266 struct work_struct processor;
267 struct rxrpc_sock __rcu *service; /* Service(s) listening on this endpoint */
268 struct rw_semaphore defrag_sem; /* control re-enablement of IP DF bit */
269 struct sk_buff_head reject_queue; /* packets awaiting rejection */
270 struct sk_buff_head event_queue; /* endpoint event packets awaiting processing */
271 struct rb_root client_conns; /* Client connections by socket params */
272 spinlock_t client_conns_lock; /* Lock for client_conns */
273 spinlock_t lock; /* access lock */
274 rwlock_t services_lock; /* lock for services list */
275 int debug_id; /* debug ID for printks */
277 bool service_closed; /* Service socket closed */
278 struct sockaddr_rxrpc srx; /* local address */
282 * RxRPC remote transport endpoint definition
283 * - matched by local endpoint, remote port, address and protocol type
286 struct rcu_head rcu; /* This must be first */
288 unsigned long hash_key;
289 struct hlist_node hash_link;
290 struct rxrpc_local *local;
291 struct hlist_head error_targets; /* targets for net error distribution */
292 struct rb_root service_conns; /* Service connections */
293 struct list_head keepalive_link; /* Link in net->peer_keepalive[] */
294 time64_t last_tx_at; /* Last time packet sent here */
295 seqlock_t service_conn_lock;
296 spinlock_t lock; /* access lock */
297 unsigned int if_mtu; /* interface MTU for this peer */
298 unsigned int mtu; /* network MTU for this peer */
299 unsigned int maxdata; /* data size (MTU - hdrsize) */
300 unsigned short hdrsize; /* header size (IP + UDP + RxRPC) */
301 int debug_id; /* debug ID for printks */
302 struct sockaddr_rxrpc srx; /* remote address */
304 /* calculated RTT cache */
305 #define RXRPC_RTT_CACHE_SIZE 32
306 spinlock_t rtt_input_lock; /* RTT lock for input routine */
307 ktime_t rtt_last_req; /* Time of last RTT request */
308 u64 rtt; /* Current RTT estimate (in nS) */
309 u64 rtt_sum; /* Sum of cache contents */
310 u64 rtt_cache[RXRPC_RTT_CACHE_SIZE]; /* Determined RTT cache */
311 u8 rtt_cursor; /* next entry at which to insert */
312 u8 rtt_usage; /* amount of cache actually used */
314 u8 cong_cwnd; /* Congestion window size */
318 * Keys for matching a connection.
320 struct rxrpc_conn_proto {
323 u32 epoch; /* epoch of this connection */
324 u32 cid; /* connection ID */
330 struct rxrpc_conn_parameters {
331 struct rxrpc_local *local; /* Representation of local endpoint */
332 struct rxrpc_peer *peer; /* Remote endpoint */
333 struct key *key; /* Security details */
334 bool exclusive; /* T if conn is exclusive */
335 bool upgrade; /* T if service ID can be upgraded */
336 u16 service_id; /* Service ID for this connection */
337 u32 security_level; /* Security level selected */
341 * Bits in the connection flags.
343 enum rxrpc_conn_flag {
344 RXRPC_CONN_HAS_IDR, /* Has a client conn ID assigned */
345 RXRPC_CONN_IN_SERVICE_CONNS, /* Conn is in peer->service_conns */
346 RXRPC_CONN_IN_CLIENT_CONNS, /* Conn is in local->client_conns */
347 RXRPC_CONN_EXPOSED, /* Conn has extra ref for exposure */
348 RXRPC_CONN_DONT_REUSE, /* Don't reuse this connection */
349 RXRPC_CONN_COUNTED, /* Counted by rxrpc_nr_client_conns */
350 RXRPC_CONN_PROBING_FOR_UPGRADE, /* Probing for service upgrade */
351 RXRPC_CONN_FINAL_ACK_0, /* Need final ACK for channel 0 */
352 RXRPC_CONN_FINAL_ACK_1, /* Need final ACK for channel 1 */
353 RXRPC_CONN_FINAL_ACK_2, /* Need final ACK for channel 2 */
354 RXRPC_CONN_FINAL_ACK_3, /* Need final ACK for channel 3 */
357 #define RXRPC_CONN_FINAL_ACK_MASK ((1UL << RXRPC_CONN_FINAL_ACK_0) | \
358 (1UL << RXRPC_CONN_FINAL_ACK_1) | \
359 (1UL << RXRPC_CONN_FINAL_ACK_2) | \
360 (1UL << RXRPC_CONN_FINAL_ACK_3))
363 * Events that can be raised upon a connection.
365 enum rxrpc_conn_event {
366 RXRPC_CONN_EV_CHALLENGE, /* Send challenge packet */
370 * The connection cache state.
372 enum rxrpc_conn_cache_state {
373 RXRPC_CONN_CLIENT_INACTIVE, /* Conn is not yet listed */
374 RXRPC_CONN_CLIENT_WAITING, /* Conn is on wait list, waiting for capacity */
375 RXRPC_CONN_CLIENT_ACTIVE, /* Conn is on active list, doing calls */
376 RXRPC_CONN_CLIENT_UPGRADE, /* Conn is on active list, probing for upgrade */
377 RXRPC_CONN_CLIENT_CULLED, /* Conn is culled and delisted, doing calls */
378 RXRPC_CONN_CLIENT_IDLE, /* Conn is on idle list, doing mostly nothing */
379 RXRPC_CONN__NR_CACHE_STATES
383 * The connection protocol state.
385 enum rxrpc_conn_proto_state {
386 RXRPC_CONN_UNUSED, /* Connection not yet attempted */
387 RXRPC_CONN_CLIENT, /* Client connection */
388 RXRPC_CONN_SERVICE_PREALLOC, /* Service connection preallocation */
389 RXRPC_CONN_SERVICE_UNSECURED, /* Service unsecured connection */
390 RXRPC_CONN_SERVICE_CHALLENGING, /* Service challenging for security */
391 RXRPC_CONN_SERVICE, /* Service secured connection */
392 RXRPC_CONN_REMOTELY_ABORTED, /* Conn aborted by peer */
393 RXRPC_CONN_LOCALLY_ABORTED, /* Conn aborted locally */
394 RXRPC_CONN__NR_STATES
398 * RxRPC connection definition
399 * - matched by { local, peer, epoch, conn_id, direction }
400 * - each connection can only handle four simultaneous calls
402 struct rxrpc_connection {
403 struct rxrpc_conn_proto proto;
404 struct rxrpc_conn_parameters params;
408 struct list_head cache_link;
410 spinlock_t channel_lock;
411 unsigned char active_chans; /* Mask of active channels */
412 #define RXRPC_ACTIVE_CHANS_MASK ((1 << RXRPC_MAXCALLS) - 1)
413 struct list_head waiting_calls; /* Calls waiting for channels */
414 struct rxrpc_channel {
415 unsigned long final_ack_at; /* Time at which to issue final ACK */
416 struct rxrpc_call __rcu *call; /* Active call */
417 unsigned int call_debug_id; /* call->debug_id */
418 u32 call_id; /* ID of current call */
419 u32 call_counter; /* Call ID counter */
420 u32 last_call; /* ID of last call */
421 u8 last_type; /* Type of last packet */
426 } channels[RXRPC_MAXCALLS];
428 struct timer_list timer; /* Conn event timer */
429 struct work_struct processor; /* connection event processor */
431 struct rb_node client_node; /* Node in local->client_conns */
432 struct rb_node service_node; /* Node in peer->service_conns */
434 struct list_head proc_link; /* link in procfs list */
435 struct list_head link; /* link in master connection list */
436 struct sk_buff_head rx_queue; /* received conn-level packets */
437 const struct rxrpc_security *security; /* applied security module */
438 struct key *server_key; /* security for this service */
439 struct crypto_sync_skcipher *cipher; /* encryption handle */
440 struct rxrpc_crypt csum_iv; /* packet checksum base */
442 unsigned long events;
443 unsigned long idle_timestamp; /* Time at which last became idle */
444 spinlock_t state_lock; /* state-change lock */
445 enum rxrpc_conn_cache_state cache_state;
446 enum rxrpc_conn_proto_state state; /* current state of connection */
447 u32 abort_code; /* Abort code of connection abort */
448 int debug_id; /* debug ID for printks */
449 atomic_t serial; /* packet serial number counter */
450 unsigned int hi_serial; /* highest serial number received */
451 u32 security_nonce; /* response re-use preventer */
452 u32 service_id; /* Service ID, possibly upgraded */
453 u8 size_align; /* data size alignment (for security) */
454 u8 security_size; /* security header size */
455 u8 security_ix; /* security type */
456 u8 out_clientflag; /* RXRPC_CLIENT_INITIATED if we are client */
457 short error; /* Local error code */
460 static inline bool rxrpc_to_server(const struct rxrpc_skb_priv *sp)
462 return sp->hdr.flags & RXRPC_CLIENT_INITIATED;
465 static inline bool rxrpc_to_client(const struct rxrpc_skb_priv *sp)
467 return !rxrpc_to_server(sp);
471 * Flags in call->flags.
473 enum rxrpc_call_flag {
474 RXRPC_CALL_RELEASED, /* call has been released - no more message to userspace */
475 RXRPC_CALL_HAS_USERID, /* has a user ID attached */
476 RXRPC_CALL_IS_SERVICE, /* Call is service call */
477 RXRPC_CALL_EXPOSED, /* The call was exposed to the world */
478 RXRPC_CALL_RX_LAST, /* Received the last packet (at rxtx_top) */
479 RXRPC_CALL_TX_LAST, /* Last packet in Tx buffer (at rxtx_top) */
480 RXRPC_CALL_SEND_PING, /* A ping will need to be sent */
481 RXRPC_CALL_PINGING, /* Ping in process */
482 RXRPC_CALL_RETRANS_TIMEOUT, /* Retransmission due to timeout occurred */
483 RXRPC_CALL_BEGAN_RX_TIMER, /* We began the expect_rx_by timer */
484 RXRPC_CALL_RX_HEARD, /* The peer responded at least once to this call */
485 RXRPC_CALL_RX_UNDERRUN, /* Got data underrun */
486 RXRPC_CALL_IS_INTR, /* The call is interruptible */
490 * Events that can be raised on a call.
492 enum rxrpc_call_event {
493 RXRPC_CALL_EV_ACK, /* need to generate ACK */
494 RXRPC_CALL_EV_ABORT, /* need to generate abort */
495 RXRPC_CALL_EV_RESEND, /* Tx resend required */
496 RXRPC_CALL_EV_PING, /* Ping send required */
497 RXRPC_CALL_EV_EXPIRED, /* Expiry occurred */
498 RXRPC_CALL_EV_ACK_LOST, /* ACK may be lost, send ping */
502 * The states that a call can be in.
504 enum rxrpc_call_state {
505 RXRPC_CALL_UNINITIALISED,
506 RXRPC_CALL_CLIENT_AWAIT_CONN, /* - client waiting for connection to become available */
507 RXRPC_CALL_CLIENT_SEND_REQUEST, /* - client sending request phase */
508 RXRPC_CALL_CLIENT_AWAIT_REPLY, /* - client awaiting reply */
509 RXRPC_CALL_CLIENT_RECV_REPLY, /* - client receiving reply phase */
510 RXRPC_CALL_SERVER_PREALLOC, /* - service preallocation */
511 RXRPC_CALL_SERVER_SECURING, /* - server securing request connection */
512 RXRPC_CALL_SERVER_ACCEPTING, /* - server accepting request */
513 RXRPC_CALL_SERVER_RECV_REQUEST, /* - server receiving request */
514 RXRPC_CALL_SERVER_ACK_REQUEST, /* - server pending ACK of request */
515 RXRPC_CALL_SERVER_SEND_REPLY, /* - server sending reply */
516 RXRPC_CALL_SERVER_AWAIT_ACK, /* - server awaiting final ACK */
517 RXRPC_CALL_COMPLETE, /* - call complete */
518 NR__RXRPC_CALL_STATES
522 * Call completion condition (state == RXRPC_CALL_COMPLETE).
524 enum rxrpc_call_completion {
525 RXRPC_CALL_SUCCEEDED, /* - Normal termination */
526 RXRPC_CALL_REMOTELY_ABORTED, /* - call aborted by peer */
527 RXRPC_CALL_LOCALLY_ABORTED, /* - call aborted locally on error or close */
528 RXRPC_CALL_LOCAL_ERROR, /* - call failed due to local error */
529 RXRPC_CALL_NETWORK_ERROR, /* - call terminated by network error */
530 NR__RXRPC_CALL_COMPLETIONS
534 * Call Tx congestion management modes.
536 enum rxrpc_congest_mode {
537 RXRPC_CALL_SLOW_START,
538 RXRPC_CALL_CONGEST_AVOIDANCE,
539 RXRPC_CALL_PACKET_LOSS,
540 RXRPC_CALL_FAST_RETRANSMIT,
541 NR__RXRPC_CONGEST_MODES
545 * RxRPC call definition
546 * - matched by { connection, call_id }
550 struct rxrpc_connection *conn; /* connection carrying call */
551 struct rxrpc_peer *peer; /* Peer record for remote address */
552 struct rxrpc_sock __rcu *socket; /* socket responsible */
553 struct rxrpc_net *rxnet; /* Network namespace to which call belongs */
554 struct mutex user_mutex; /* User access mutex */
555 unsigned long ack_at; /* When deferred ACK needs to happen */
556 unsigned long ack_lost_at; /* When ACK is figured as lost */
557 unsigned long resend_at; /* When next resend needs to happen */
558 unsigned long ping_at; /* When next to send a ping */
559 unsigned long keepalive_at; /* When next to send a keepalive ping */
560 unsigned long expect_rx_by; /* When we expect to get a packet by */
561 unsigned long expect_req_by; /* When we expect to get a request DATA packet by */
562 unsigned long expect_term_by; /* When we expect call termination by */
563 u32 next_rx_timo; /* Timeout for next Rx packet (jif) */
564 u32 next_req_timo; /* Timeout for next Rx request packet (jif) */
565 struct timer_list timer; /* Combined event timer */
566 struct work_struct processor; /* Event processor */
567 rxrpc_notify_rx_t notify_rx; /* kernel service Rx notification function */
568 struct list_head link; /* link in master call list */
569 struct list_head chan_wait_link; /* Link in conn->waiting_calls */
570 struct hlist_node error_link; /* link in error distribution list */
571 struct list_head accept_link; /* Link in rx->acceptq */
572 struct list_head recvmsg_link; /* Link in rx->recvmsg_q */
573 struct list_head sock_link; /* Link in rx->sock_calls */
574 struct rb_node sock_node; /* Node in rx->calls */
575 struct sk_buff *tx_pending; /* Tx socket buffer being filled */
576 wait_queue_head_t waitq; /* Wait queue for channel or Tx */
577 s64 tx_total_len; /* Total length left to be transmitted (or -1) */
578 __be32 crypto_buf[2]; /* Temporary packet crypto buffer */
579 unsigned long user_call_ID; /* user-defined call ID */
581 unsigned long events;
583 spinlock_t notify_lock; /* Kernel notification lock */
584 rwlock_t state_lock; /* lock for state transition */
585 u32 abort_code; /* Local/remote abort code */
586 int error; /* Local error incurred */
587 enum rxrpc_call_state state; /* current state of call */
588 enum rxrpc_call_completion completion; /* Call completion condition */
590 u16 service_id; /* service ID */
591 u8 security_ix; /* Security type */
592 u32 call_id; /* call ID on connection */
593 u32 cid; /* connection ID plus channel index */
594 int debug_id; /* debug ID for printks */
595 unsigned short rx_pkt_offset; /* Current recvmsg packet offset */
596 unsigned short rx_pkt_len; /* Current recvmsg packet len */
598 /* Rx/Tx circular buffer, depending on phase.
600 * In the Rx phase, packets are annotated with 0 or the number of the
601 * segment of a jumbo packet each buffer refers to. There can be up to
602 * 47 segments in a maximum-size UDP packet.
604 * In the Tx phase, packets are annotated with which buffers have been
607 #define RXRPC_RXTX_BUFF_SIZE 64
608 #define RXRPC_RXTX_BUFF_MASK (RXRPC_RXTX_BUFF_SIZE - 1)
609 #define RXRPC_INIT_RX_WINDOW_SIZE 63
610 struct sk_buff **rxtx_buffer;
611 u8 *rxtx_annotations;
612 #define RXRPC_TX_ANNO_ACK 0
613 #define RXRPC_TX_ANNO_UNACK 1
614 #define RXRPC_TX_ANNO_NAK 2
615 #define RXRPC_TX_ANNO_RETRANS 3
616 #define RXRPC_TX_ANNO_MASK 0x03
617 #define RXRPC_TX_ANNO_LAST 0x04
618 #define RXRPC_TX_ANNO_RESENT 0x08
620 #define RXRPC_RX_ANNO_SUBPACKET 0x3f /* Subpacket number in jumbogram */
621 #define RXRPC_RX_ANNO_VERIFIED 0x80 /* Set if verified and decrypted */
622 rxrpc_seq_t tx_hard_ack; /* Dead slot in buffer; the first transmitted but
623 * not hard-ACK'd packet follows this.
625 rxrpc_seq_t tx_top; /* Highest Tx slot allocated. */
626 u16 tx_backoff; /* Delay to insert due to Tx failure */
628 /* TCP-style slow-start congestion control [RFC5681]. Since the SMSS
629 * is fixed, we keep these numbers in terms of segments (ie. DATA
630 * packets) rather than bytes.
632 #define RXRPC_TX_SMSS RXRPC_JUMBO_DATALEN
633 u8 cong_cwnd; /* Congestion window size */
634 u8 cong_extra; /* Extra to send for congestion management */
635 u8 cong_ssthresh; /* Slow-start threshold */
636 enum rxrpc_congest_mode cong_mode:8; /* Congestion management mode */
637 u8 cong_dup_acks; /* Count of ACKs showing missing packets */
638 u8 cong_cumul_acks; /* Cumulative ACK count */
639 ktime_t cong_tstamp; /* Last time cwnd was changed */
641 rxrpc_seq_t rx_hard_ack; /* Dead slot in buffer; the first received but not
642 * consumed packet follows this.
644 rxrpc_seq_t rx_top; /* Highest Rx slot allocated. */
645 rxrpc_seq_t rx_expect_next; /* Expected next packet sequence number */
646 rxrpc_serial_t rx_serial; /* Highest serial received for this call */
647 u8 rx_winsize; /* Size of Rx window */
648 u8 tx_winsize; /* Maximum size of Tx window */
649 bool tx_phase; /* T if transmission phase, F if receive phase */
650 u8 nr_jumbo_bad; /* Number of jumbo dups/exceeds-windows */
652 spinlock_t input_lock; /* Lock for packet input to this call */
654 /* receive-phase ACK management */
655 u8 ackr_reason; /* reason to ACK */
656 rxrpc_serial_t ackr_serial; /* serial of packet being ACK'd */
657 rxrpc_serial_t ackr_first_seq; /* first sequence number received */
658 rxrpc_seq_t ackr_prev_seq; /* previous sequence number received */
659 rxrpc_seq_t ackr_consumed; /* Highest packet shown consumed */
660 rxrpc_seq_t ackr_seen; /* Highest packet shown seen */
662 /* ping management */
663 rxrpc_serial_t ping_serial; /* Last ping sent */
664 ktime_t ping_time; /* Time last ping sent */
666 /* transmission-phase ACK management */
667 ktime_t acks_latest_ts; /* Timestamp of latest ACK received */
668 rxrpc_serial_t acks_latest; /* serial number of latest ACK received */
669 rxrpc_seq_t acks_lowest_nak; /* Lowest NACK in the buffer (or ==tx_hard_ack) */
670 rxrpc_seq_t acks_lost_top; /* tx_top at the time lost-ack ping sent */
671 rxrpc_serial_t acks_lost_ping; /* Serial number of probe ACK */
675 * Summary of a new ACK and the changes it made to the Tx buffer packet states.
677 struct rxrpc_ack_summary {
679 u8 nr_acks; /* Number of ACKs in packet */
680 u8 nr_nacks; /* Number of NACKs in packet */
681 u8 nr_new_acks; /* Number of new ACKs in packet */
682 u8 nr_new_nacks; /* Number of new NACKs in packet */
683 u8 nr_rot_new_acks; /* Number of rotated new ACKs */
684 bool new_low_nack; /* T if new low NACK found */
685 bool retrans_timeo; /* T if reTx due to timeout happened */
686 u8 flight_size; /* Number of unreceived transmissions */
687 /* Place to stash values for tracing */
688 enum rxrpc_congest_mode mode:8;
696 * sendmsg() cmsg-specified parameters.
699 RXRPC_CMD_SEND_DATA, /* send data message */
700 RXRPC_CMD_SEND_ABORT, /* request abort generation */
701 RXRPC_CMD_ACCEPT, /* [server] accept incoming call */
702 RXRPC_CMD_REJECT_BUSY, /* [server] reject a call as busy */
705 struct rxrpc_call_params {
706 s64 tx_total_len; /* Total Tx data length (if send data) */
707 unsigned long user_call_ID; /* User's call ID */
709 u32 hard; /* Maximum lifetime (sec) */
710 u32 idle; /* Max time since last data packet (msec) */
711 u32 normal; /* Max time since last call packet (msec) */
713 u8 nr_timeouts; /* Number of timeouts specified */
714 bool intr; /* The call is interruptible */
717 struct rxrpc_send_params {
718 struct rxrpc_call_params call;
719 u32 abort_code; /* Abort code to Tx (if abort) */
720 enum rxrpc_command command : 8; /* The command to implement */
721 bool exclusive; /* Shared or exclusive call */
722 bool upgrade; /* If the connection is upgradeable */
725 #include <trace/events/rxrpc.h>
730 extern atomic_t rxrpc_n_tx_skbs, rxrpc_n_rx_skbs;
731 extern struct workqueue_struct *rxrpc_workqueue;
736 int rxrpc_service_prealloc(struct rxrpc_sock *, gfp_t);
737 void rxrpc_discard_prealloc(struct rxrpc_sock *);
738 struct rxrpc_call *rxrpc_new_incoming_call(struct rxrpc_local *,
741 void rxrpc_accept_incoming_calls(struct rxrpc_local *);
742 struct rxrpc_call *rxrpc_accept_call(struct rxrpc_sock *, unsigned long,
744 int rxrpc_reject_call(struct rxrpc_sock *);
749 void rxrpc_propose_ACK(struct rxrpc_call *, u8, u32, bool, bool,
750 enum rxrpc_propose_ack_trace);
751 void rxrpc_process_call(struct work_struct *);
753 static inline void rxrpc_reduce_call_timer(struct rxrpc_call *call,
754 unsigned long expire_at,
756 enum rxrpc_timer_trace why)
758 trace_rxrpc_timer(call, why, now);
759 timer_reduce(&call->timer, expire_at);
765 extern const char *const rxrpc_call_states[];
766 extern const char *const rxrpc_call_completions[];
767 extern unsigned int rxrpc_max_call_lifetime;
768 extern struct kmem_cache *rxrpc_call_jar;
770 struct rxrpc_call *rxrpc_find_call_by_user_ID(struct rxrpc_sock *, unsigned long);
771 struct rxrpc_call *rxrpc_alloc_call(struct rxrpc_sock *, gfp_t, unsigned int);
772 struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *,
773 struct rxrpc_conn_parameters *,
774 struct sockaddr_rxrpc *,
775 struct rxrpc_call_params *, gfp_t,
777 void rxrpc_incoming_call(struct rxrpc_sock *, struct rxrpc_call *,
779 void rxrpc_release_call(struct rxrpc_sock *, struct rxrpc_call *);
780 void rxrpc_release_calls_on_socket(struct rxrpc_sock *);
781 bool __rxrpc_queue_call(struct rxrpc_call *);
782 bool rxrpc_queue_call(struct rxrpc_call *);
783 void rxrpc_see_call(struct rxrpc_call *);
784 void rxrpc_get_call(struct rxrpc_call *, enum rxrpc_call_trace);
785 void rxrpc_put_call(struct rxrpc_call *, enum rxrpc_call_trace);
786 void rxrpc_cleanup_call(struct rxrpc_call *);
787 void rxrpc_destroy_all_calls(struct rxrpc_net *);
789 static inline bool rxrpc_is_service_call(const struct rxrpc_call *call)
791 return test_bit(RXRPC_CALL_IS_SERVICE, &call->flags);
794 static inline bool rxrpc_is_client_call(const struct rxrpc_call *call)
796 return !rxrpc_is_service_call(call);
800 * Transition a call to the complete state.
802 static inline bool __rxrpc_set_call_completion(struct rxrpc_call *call,
803 enum rxrpc_call_completion compl,
807 if (call->state < RXRPC_CALL_COMPLETE) {
808 call->abort_code = abort_code;
810 call->completion = compl,
811 call->state = RXRPC_CALL_COMPLETE;
812 trace_rxrpc_call_complete(call);
813 wake_up(&call->waitq);
819 static inline bool rxrpc_set_call_completion(struct rxrpc_call *call,
820 enum rxrpc_call_completion compl,
826 write_lock_bh(&call->state_lock);
827 ret = __rxrpc_set_call_completion(call, compl, abort_code, error);
828 write_unlock_bh(&call->state_lock);
833 * Record that a call successfully completed.
835 static inline bool __rxrpc_call_completed(struct rxrpc_call *call)
837 return __rxrpc_set_call_completion(call, RXRPC_CALL_SUCCEEDED, 0, 0);
840 static inline bool rxrpc_call_completed(struct rxrpc_call *call)
844 write_lock_bh(&call->state_lock);
845 ret = __rxrpc_call_completed(call);
846 write_unlock_bh(&call->state_lock);
851 * Record that a call is locally aborted.
853 static inline bool __rxrpc_abort_call(const char *why, struct rxrpc_call *call,
855 u32 abort_code, int error)
857 trace_rxrpc_abort(call->debug_id, why, call->cid, call->call_id, seq,
859 return __rxrpc_set_call_completion(call, RXRPC_CALL_LOCALLY_ABORTED,
863 static inline bool rxrpc_abort_call(const char *why, struct rxrpc_call *call,
864 rxrpc_seq_t seq, u32 abort_code, int error)
868 write_lock_bh(&call->state_lock);
869 ret = __rxrpc_abort_call(why, call, seq, abort_code, error);
870 write_unlock_bh(&call->state_lock);
875 * Abort a call due to a protocol error.
877 static inline bool __rxrpc_abort_eproto(struct rxrpc_call *call,
879 const char *eproto_why,
883 struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
885 trace_rxrpc_rx_eproto(call, sp->hdr.serial, eproto_why);
886 return rxrpc_abort_call(why, call, sp->hdr.seq, abort_code, -EPROTO);
889 #define rxrpc_abort_eproto(call, skb, eproto_why, abort_why, abort_code) \
890 __rxrpc_abort_eproto((call), (skb), tracepoint_string(eproto_why), \
891 (abort_why), (abort_code))
896 extern unsigned int rxrpc_max_client_connections;
897 extern unsigned int rxrpc_reap_client_connections;
898 extern unsigned long rxrpc_conn_idle_client_expiry;
899 extern unsigned long rxrpc_conn_idle_client_fast_expiry;
900 extern struct idr rxrpc_client_conn_ids;
902 void rxrpc_destroy_client_conn_ids(void);
903 int rxrpc_connect_call(struct rxrpc_sock *, struct rxrpc_call *,
904 struct rxrpc_conn_parameters *, struct sockaddr_rxrpc *,
906 void rxrpc_expose_client_call(struct rxrpc_call *);
907 void rxrpc_disconnect_client_call(struct rxrpc_call *);
908 void rxrpc_put_client_conn(struct rxrpc_connection *);
909 void rxrpc_discard_expired_client_conns(struct work_struct *);
910 void rxrpc_destroy_all_client_connections(struct rxrpc_net *);
915 void rxrpc_process_connection(struct work_struct *);
920 extern unsigned int rxrpc_connection_expiry;
921 extern unsigned int rxrpc_closed_conn_expiry;
923 struct rxrpc_connection *rxrpc_alloc_connection(gfp_t);
924 struct rxrpc_connection *rxrpc_find_connection_rcu(struct rxrpc_local *,
926 struct rxrpc_peer **);
927 void __rxrpc_disconnect_call(struct rxrpc_connection *, struct rxrpc_call *);
928 void rxrpc_disconnect_call(struct rxrpc_call *);
929 void rxrpc_kill_connection(struct rxrpc_connection *);
930 bool rxrpc_queue_conn(struct rxrpc_connection *);
931 void rxrpc_see_connection(struct rxrpc_connection *);
932 void rxrpc_get_connection(struct rxrpc_connection *);
933 struct rxrpc_connection *rxrpc_get_connection_maybe(struct rxrpc_connection *);
934 void rxrpc_put_service_conn(struct rxrpc_connection *);
935 void rxrpc_service_connection_reaper(struct work_struct *);
936 void rxrpc_destroy_all_connections(struct rxrpc_net *);
938 static inline bool rxrpc_conn_is_client(const struct rxrpc_connection *conn)
940 return conn->out_clientflag;
943 static inline bool rxrpc_conn_is_service(const struct rxrpc_connection *conn)
945 return !rxrpc_conn_is_client(conn);
948 static inline void rxrpc_put_connection(struct rxrpc_connection *conn)
953 if (rxrpc_conn_is_client(conn))
954 rxrpc_put_client_conn(conn);
956 rxrpc_put_service_conn(conn);
959 static inline void rxrpc_reduce_conn_timer(struct rxrpc_connection *conn,
960 unsigned long expire_at)
962 timer_reduce(&conn->timer, expire_at);
968 struct rxrpc_connection *rxrpc_find_service_conn_rcu(struct rxrpc_peer *,
970 struct rxrpc_connection *rxrpc_prealloc_service_connection(struct rxrpc_net *, gfp_t);
971 void rxrpc_new_incoming_connection(struct rxrpc_sock *,
972 struct rxrpc_connection *, struct sk_buff *);
973 void rxrpc_unpublish_service_conn(struct rxrpc_connection *);
978 int rxrpc_input_packet(struct sock *, struct sk_buff *);
983 extern const struct rxrpc_security rxrpc_no_security;
988 extern struct key_type key_type_rxrpc;
989 extern struct key_type key_type_rxrpc_s;
991 int rxrpc_request_key(struct rxrpc_sock *, char __user *, int);
992 int rxrpc_server_keyring(struct rxrpc_sock *, char __user *, int);
993 int rxrpc_get_server_data_key(struct rxrpc_connection *, const void *, time64_t,
999 extern void rxrpc_process_local_events(struct rxrpc_local *);
1004 struct rxrpc_local *rxrpc_lookup_local(struct net *, const struct sockaddr_rxrpc *);
1005 struct rxrpc_local *rxrpc_get_local(struct rxrpc_local *);
1006 struct rxrpc_local *rxrpc_get_local_maybe(struct rxrpc_local *);
1007 void rxrpc_put_local(struct rxrpc_local *);
1008 struct rxrpc_local *rxrpc_use_local(struct rxrpc_local *);
1009 void rxrpc_unuse_local(struct rxrpc_local *);
1010 void rxrpc_queue_local(struct rxrpc_local *);
1011 void rxrpc_destroy_all_locals(struct rxrpc_net *);
1016 extern unsigned int rxrpc_max_backlog __read_mostly;
1017 extern unsigned long rxrpc_requested_ack_delay;
1018 extern unsigned long rxrpc_soft_ack_delay;
1019 extern unsigned long rxrpc_idle_ack_delay;
1020 extern unsigned int rxrpc_rx_window_size;
1021 extern unsigned int rxrpc_rx_mtu;
1022 extern unsigned int rxrpc_rx_jumbo_max;
1023 extern unsigned long rxrpc_resend_timeout;
1025 extern const s8 rxrpc_ack_priority[];
1030 extern unsigned int rxrpc_net_id;
1031 extern struct pernet_operations rxrpc_net_ops;
1033 static inline struct rxrpc_net *rxrpc_net(struct net *net)
1035 return net_generic(net, rxrpc_net_id);
1041 int rxrpc_send_ack_packet(struct rxrpc_call *, bool, rxrpc_serial_t *);
1042 int rxrpc_send_abort_packet(struct rxrpc_call *);
1043 int rxrpc_send_data_packet(struct rxrpc_call *, struct sk_buff *, bool);
1044 void rxrpc_reject_packets(struct rxrpc_local *);
1045 void rxrpc_send_keepalive(struct rxrpc_peer *);
1050 void rxrpc_error_report(struct sock *);
1051 void rxrpc_peer_add_rtt(struct rxrpc_call *, enum rxrpc_rtt_rx_trace,
1052 rxrpc_serial_t, rxrpc_serial_t, ktime_t, ktime_t);
1053 void rxrpc_peer_keepalive_worker(struct work_struct *);
1058 struct rxrpc_peer *rxrpc_lookup_peer_rcu(struct rxrpc_local *,
1059 const struct sockaddr_rxrpc *);
1060 struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_sock *, struct rxrpc_local *,
1061 struct sockaddr_rxrpc *, gfp_t);
1062 struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *, gfp_t);
1063 void rxrpc_new_incoming_peer(struct rxrpc_sock *, struct rxrpc_local *,
1064 struct rxrpc_peer *);
1065 void rxrpc_destroy_all_peers(struct rxrpc_net *);
1066 struct rxrpc_peer *rxrpc_get_peer(struct rxrpc_peer *);
1067 struct rxrpc_peer *rxrpc_get_peer_maybe(struct rxrpc_peer *);
1068 void rxrpc_put_peer(struct rxrpc_peer *);
1069 void rxrpc_put_peer_locked(struct rxrpc_peer *);
1074 extern const struct seq_operations rxrpc_call_seq_ops;
1075 extern const struct seq_operations rxrpc_connection_seq_ops;
1076 extern const struct seq_operations rxrpc_peer_seq_ops;
1081 void rxrpc_notify_socket(struct rxrpc_call *);
1082 int rxrpc_recvmsg(struct socket *, struct msghdr *, size_t, int);
1088 extern const struct rxrpc_security rxkad;
1094 int __init rxrpc_init_security(void);
1095 void rxrpc_exit_security(void);
1096 int rxrpc_init_client_conn_security(struct rxrpc_connection *);
1097 int rxrpc_init_server_conn_security(struct rxrpc_connection *);
1102 int rxrpc_do_sendmsg(struct rxrpc_sock *, struct msghdr *, size_t);
1107 void rxrpc_kernel_data_consumed(struct rxrpc_call *, struct sk_buff *);
1108 void rxrpc_packet_destructor(struct sk_buff *);
1109 void rxrpc_new_skb(struct sk_buff *, enum rxrpc_skb_trace);
1110 void rxrpc_see_skb(struct sk_buff *, enum rxrpc_skb_trace);
1111 void rxrpc_get_skb(struct sk_buff *, enum rxrpc_skb_trace);
1112 void rxrpc_free_skb(struct sk_buff *, enum rxrpc_skb_trace);
1113 void rxrpc_purge_queue(struct sk_buff_head *);
1118 #ifdef CONFIG_SYSCTL
1119 extern int __init rxrpc_sysctl_init(void);
1120 extern void rxrpc_sysctl_exit(void);
1122 static inline int __init rxrpc_sysctl_init(void) { return 0; }
1123 static inline void rxrpc_sysctl_exit(void) {}
1129 int rxrpc_extract_addr_from_skb(struct sockaddr_rxrpc *, struct sk_buff *);
1131 static inline bool before(u32 seq1, u32 seq2)
1133 return (s32)(seq1 - seq2) < 0;
1135 static inline bool before_eq(u32 seq1, u32 seq2)
1137 return (s32)(seq1 - seq2) <= 0;
1139 static inline bool after(u32 seq1, u32 seq2)
1141 return (s32)(seq1 - seq2) > 0;
1143 static inline bool after_eq(u32 seq1, u32 seq2)
1145 return (s32)(seq1 - seq2) >= 0;
1151 extern unsigned int rxrpc_debug;
1153 #define dbgprintk(FMT,...) \
1154 printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__)
1156 #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__)
1157 #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__)
1158 #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__)
1159 #define kproto(FMT,...) dbgprintk("### "FMT ,##__VA_ARGS__)
1160 #define knet(FMT,...) dbgprintk("@@@ "FMT ,##__VA_ARGS__)
1163 #if defined(__KDEBUG)
1164 #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__)
1165 #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__)
1166 #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__)
1167 #define _proto(FMT,...) kproto(FMT,##__VA_ARGS__)
1168 #define _net(FMT,...) knet(FMT,##__VA_ARGS__)
1170 #elif defined(CONFIG_AF_RXRPC_DEBUG)
1171 #define RXRPC_DEBUG_KENTER 0x01
1172 #define RXRPC_DEBUG_KLEAVE 0x02
1173 #define RXRPC_DEBUG_KDEBUG 0x04
1174 #define RXRPC_DEBUG_KPROTO 0x08
1175 #define RXRPC_DEBUG_KNET 0x10
1177 #define _enter(FMT,...) \
1179 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KENTER)) \
1180 kenter(FMT,##__VA_ARGS__); \
1183 #define _leave(FMT,...) \
1185 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KLEAVE)) \
1186 kleave(FMT,##__VA_ARGS__); \
1189 #define _debug(FMT,...) \
1191 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KDEBUG)) \
1192 kdebug(FMT,##__VA_ARGS__); \
1195 #define _proto(FMT,...) \
1197 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KPROTO)) \
1198 kproto(FMT,##__VA_ARGS__); \
1201 #define _net(FMT,...) \
1203 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KNET)) \
1204 knet(FMT,##__VA_ARGS__); \
1208 #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__)
1209 #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__)
1210 #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__)
1211 #define _proto(FMT,...) no_printk("### "FMT ,##__VA_ARGS__)
1212 #define _net(FMT,...) no_printk("@@@ "FMT ,##__VA_ARGS__)
1216 * debug assertion checking
1218 #if 1 // defined(__KDEBUGALL)
1222 if (unlikely(!(X))) { \
1223 pr_err("Assertion failed\n"); \
1228 #define ASSERTCMP(X, OP, Y) \
1230 __typeof__(X) _x = (X); \
1231 __typeof__(Y) _y = (__typeof__(X))(Y); \
1232 if (unlikely(!(_x OP _y))) { \
1233 pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \
1234 (unsigned long)_x, (unsigned long)_x, #OP, \
1235 (unsigned long)_y, (unsigned long)_y); \
1240 #define ASSERTIF(C, X) \
1242 if (unlikely((C) && !(X))) { \
1243 pr_err("Assertion failed\n"); \
1248 #define ASSERTIFCMP(C, X, OP, Y) \
1250 __typeof__(X) _x = (X); \
1251 __typeof__(Y) _y = (__typeof__(X))(Y); \
1252 if (unlikely((C) && !(_x OP _y))) { \
1253 pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \
1254 (unsigned long)_x, (unsigned long)_x, #OP, \
1255 (unsigned long)_y, (unsigned long)_y); \
1266 #define ASSERTCMP(X, OP, Y) \
1270 #define ASSERTIF(C, X) \
1274 #define ASSERTIFCMP(C, X, OP, Y) \
1278 #endif /* __KDEBUGALL */