1 /* AF_RXRPC implementation
3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
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.
12 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
14 #include <linux/module.h>
15 #include <linux/kernel.h>
16 #include <linux/net.h>
17 #include <linux/slab.h>
18 #include <linux/skbuff.h>
19 #include <linux/random.h>
20 #include <linux/poll.h>
21 #include <linux/proc_fs.h>
22 #include <linux/key-type.h>
23 #include <net/net_namespace.h>
25 #include <net/af_rxrpc.h>
26 #define CREATE_TRACE_POINTS
27 #include "ar-internal.h"
29 MODULE_DESCRIPTION("RxRPC network protocol");
30 MODULE_AUTHOR("Red Hat, Inc.");
31 MODULE_LICENSE("GPL");
32 MODULE_ALIAS_NETPROTO(PF_RXRPC
);
34 unsigned int rxrpc_debug
; // = RXRPC_DEBUG_KPROTO;
35 module_param_named(debug
, rxrpc_debug
, uint
, S_IWUSR
| S_IRUGO
);
36 MODULE_PARM_DESC(debug
, "RxRPC debugging mask");
38 static struct proto rxrpc_proto
;
39 static const struct proto_ops rxrpc_rpc_ops
;
41 /* current debugging ID */
42 atomic_t rxrpc_debug_id
;
44 /* count of skbs currently in use */
45 atomic_t rxrpc_n_tx_skbs
, rxrpc_n_rx_skbs
;
47 struct workqueue_struct
*rxrpc_workqueue
;
49 static void rxrpc_sock_destructor(struct sock
*);
52 * see if an RxRPC socket is currently writable
54 static inline int rxrpc_writable(struct sock
*sk
)
56 return refcount_read(&sk
->sk_wmem_alloc
) < (size_t) sk
->sk_sndbuf
;
60 * wait for write bufferage to become available
62 static void rxrpc_write_space(struct sock
*sk
)
66 if (rxrpc_writable(sk
)) {
67 struct socket_wq
*wq
= rcu_dereference(sk
->sk_wq
);
69 if (skwq_has_sleeper(wq
))
70 wake_up_interruptible(&wq
->wait
);
71 sk_wake_async(sk
, SOCK_WAKE_SPACE
, POLL_OUT
);
77 * validate an RxRPC address
79 static int rxrpc_validate_address(struct rxrpc_sock
*rx
,
80 struct sockaddr_rxrpc
*srx
,
85 if (len
< sizeof(struct sockaddr_rxrpc
))
88 if (srx
->srx_family
!= AF_RXRPC
)
91 if (srx
->transport_type
!= SOCK_DGRAM
)
92 return -ESOCKTNOSUPPORT
;
94 len
-= offsetof(struct sockaddr_rxrpc
, transport
);
95 if (srx
->transport_len
< sizeof(sa_family_t
) ||
96 srx
->transport_len
> len
)
99 if (srx
->transport
.family
!= rx
->family
)
100 return -EAFNOSUPPORT
;
102 switch (srx
->transport
.family
) {
104 if (srx
->transport_len
< sizeof(struct sockaddr_in
))
106 tail
= offsetof(struct sockaddr_rxrpc
, transport
.sin
.__pad
);
109 #ifdef CONFIG_AF_RXRPC_IPV6
111 if (srx
->transport_len
< sizeof(struct sockaddr_in6
))
113 tail
= offsetof(struct sockaddr_rxrpc
, transport
) +
114 sizeof(struct sockaddr_in6
);
119 return -EAFNOSUPPORT
;
123 memset((void *)srx
+ tail
, 0, len
- tail
);
124 _debug("INET: %pISp", &srx
->transport
);
129 * bind a local address to an RxRPC socket
131 static int rxrpc_bind(struct socket
*sock
, struct sockaddr
*saddr
, int len
)
133 struct sockaddr_rxrpc
*srx
= (struct sockaddr_rxrpc
*)saddr
;
134 struct rxrpc_local
*local
;
135 struct rxrpc_sock
*rx
= rxrpc_sk(sock
->sk
);
136 u16 service_id
= srx
->srx_service
;
139 _enter("%p,%p,%d", rx
, saddr
, len
);
141 ret
= rxrpc_validate_address(rx
, srx
, len
);
147 switch (rx
->sk
.sk_state
) {
150 local
= rxrpc_lookup_local(sock_net(&rx
->sk
), &rx
->srx
);
152 ret
= PTR_ERR(local
);
157 write_lock(&local
->services_lock
);
158 if (rcu_access_pointer(local
->service
))
161 rcu_assign_pointer(local
->service
, rx
);
162 write_unlock(&local
->services_lock
);
164 rx
->sk
.sk_state
= RXRPC_SERVER_BOUND
;
167 rx
->sk
.sk_state
= RXRPC_CLIENT_BOUND
;
171 case RXRPC_SERVER_BOUND
:
176 if (service_id
== rx
->srx
.srx_service
)
179 srx
->srx_service
= rx
->srx
.srx_service
;
180 if (memcmp(srx
, &rx
->srx
, sizeof(*srx
)) != 0)
182 rx
->second_service
= service_id
;
183 rx
->sk
.sk_state
= RXRPC_SERVER_BOUND2
;
191 release_sock(&rx
->sk
);
196 write_unlock(&local
->services_lock
);
197 rxrpc_put_local(local
);
200 release_sock(&rx
->sk
);
202 _leave(" = %d", ret
);
207 * set the number of pending calls permitted on a listening socket
209 static int rxrpc_listen(struct socket
*sock
, int backlog
)
211 struct sock
*sk
= sock
->sk
;
212 struct rxrpc_sock
*rx
= rxrpc_sk(sk
);
213 unsigned int max
, old
;
216 _enter("%p,%d", rx
, backlog
);
220 switch (rx
->sk
.sk_state
) {
222 ret
= -EADDRNOTAVAIL
;
224 case RXRPC_SERVER_BOUND
:
225 case RXRPC_SERVER_BOUND2
:
226 ASSERT(rx
->local
!= NULL
);
227 max
= READ_ONCE(rxrpc_max_backlog
);
229 if (backlog
== INT_MAX
)
231 else if (backlog
< 0 || backlog
> max
)
233 old
= sk
->sk_max_ack_backlog
;
234 sk
->sk_max_ack_backlog
= backlog
;
235 ret
= rxrpc_service_prealloc(rx
, GFP_KERNEL
);
237 rx
->sk
.sk_state
= RXRPC_SERVER_LISTENING
;
239 sk
->sk_max_ack_backlog
= old
;
241 case RXRPC_SERVER_LISTENING
:
243 rx
->sk
.sk_state
= RXRPC_SERVER_LISTEN_DISABLED
;
244 sk
->sk_max_ack_backlog
= 0;
245 rxrpc_discard_prealloc(rx
);
254 release_sock(&rx
->sk
);
255 _leave(" = %d", ret
);
260 * rxrpc_kernel_begin_call - Allow a kernel service to begin a call
261 * @sock: The socket on which to make the call
262 * @srx: The address of the peer to contact
263 * @key: The security context to use (defaults to socket setting)
264 * @user_call_ID: The ID to use
265 * @tx_total_len: Total length of data to transmit during the call (or -1)
266 * @gfp: The allocation constraints
267 * @notify_rx: Where to send notifications instead of socket queue
269 * Allow a kernel service to begin a call on the nominated socket. This just
270 * sets up all the internal tracking structures and allocates connection and
271 * call IDs as appropriate. The call to be used is returned.
273 * The default socket destination address and security may be overridden by
274 * supplying @srx and @key.
276 struct rxrpc_call
*rxrpc_kernel_begin_call(struct socket
*sock
,
277 struct sockaddr_rxrpc
*srx
,
279 unsigned long user_call_ID
,
282 rxrpc_notify_rx_t notify_rx
)
284 struct rxrpc_conn_parameters cp
;
285 struct rxrpc_call
*call
;
286 struct rxrpc_sock
*rx
= rxrpc_sk(sock
->sk
);
289 _enter(",,%x,%lx", key_serial(key
), user_call_ID
);
291 ret
= rxrpc_validate_address(rx
, srx
, sizeof(*srx
));
299 if (key
&& !key
->payload
.data
[0])
300 key
= NULL
; /* a no-security key */
302 memset(&cp
, 0, sizeof(cp
));
303 cp
.local
= rx
->local
;
305 cp
.security_level
= 0;
306 cp
.exclusive
= false;
307 cp
.service_id
= srx
->srx_service
;
308 call
= rxrpc_new_client_call(rx
, &cp
, srx
, user_call_ID
, tx_total_len
,
310 /* The socket has been unlocked. */
312 call
->notify_rx
= notify_rx
;
314 mutex_unlock(&call
->user_mutex
);
315 _leave(" = %p", call
);
318 EXPORT_SYMBOL(rxrpc_kernel_begin_call
);
321 * rxrpc_kernel_end_call - Allow a kernel service to end a call it was using
322 * @sock: The socket the call is on
323 * @call: The call to end
325 * Allow a kernel service to end a call it was using. The call must be
326 * complete before this is called (the call should be aborted if necessary).
328 void rxrpc_kernel_end_call(struct socket
*sock
, struct rxrpc_call
*call
)
330 _enter("%d{%d}", call
->debug_id
, atomic_read(&call
->usage
));
332 mutex_lock(&call
->user_mutex
);
333 rxrpc_release_call(rxrpc_sk(sock
->sk
), call
);
334 mutex_unlock(&call
->user_mutex
);
335 rxrpc_put_call(call
, rxrpc_call_put_kernel
);
337 EXPORT_SYMBOL(rxrpc_kernel_end_call
);
340 * rxrpc_kernel_new_call_notification - Get notifications of new calls
341 * @sock: The socket to intercept received messages on
342 * @notify_new_call: Function to be called when new calls appear
343 * @discard_new_call: Function to discard preallocated calls
345 * Allow a kernel service to be given notifications about new calls.
347 void rxrpc_kernel_new_call_notification(
349 rxrpc_notify_new_call_t notify_new_call
,
350 rxrpc_discard_new_call_t discard_new_call
)
352 struct rxrpc_sock
*rx
= rxrpc_sk(sock
->sk
);
354 rx
->notify_new_call
= notify_new_call
;
355 rx
->discard_new_call
= discard_new_call
;
357 EXPORT_SYMBOL(rxrpc_kernel_new_call_notification
);
360 * connect an RxRPC socket
361 * - this just targets it at a specific destination; no actual connection
362 * negotiation takes place
364 static int rxrpc_connect(struct socket
*sock
, struct sockaddr
*addr
,
365 int addr_len
, int flags
)
367 struct sockaddr_rxrpc
*srx
= (struct sockaddr_rxrpc
*)addr
;
368 struct rxrpc_sock
*rx
= rxrpc_sk(sock
->sk
);
371 _enter("%p,%p,%d,%d", rx
, addr
, addr_len
, flags
);
373 ret
= rxrpc_validate_address(rx
, srx
, addr_len
);
375 _leave(" = %d [bad addr]", ret
);
382 if (test_bit(RXRPC_SOCK_CONNECTED
, &rx
->flags
))
385 switch (rx
->sk
.sk_state
) {
387 rx
->sk
.sk_state
= RXRPC_CLIENT_UNBOUND
;
388 case RXRPC_CLIENT_UNBOUND
:
389 case RXRPC_CLIENT_BOUND
:
396 rx
->connect_srx
= *srx
;
397 set_bit(RXRPC_SOCK_CONNECTED
, &rx
->flags
);
401 release_sock(&rx
->sk
);
406 * send a message through an RxRPC socket
407 * - in a client this does a number of things:
408 * - finds/sets up a connection for the security specified (if any)
409 * - initiates a call (ID in control data)
410 * - ends the request phase of a call (if MSG_MORE is not set)
411 * - sends a call data packet
412 * - may send an abort (abort code in control data)
414 static int rxrpc_sendmsg(struct socket
*sock
, struct msghdr
*m
, size_t len
)
416 struct rxrpc_local
*local
;
417 struct rxrpc_sock
*rx
= rxrpc_sk(sock
->sk
);
420 _enter(",{%d},,%zu", rx
->sk
.sk_state
, len
);
422 if (m
->msg_flags
& MSG_OOB
)
426 ret
= rxrpc_validate_address(rx
, m
->msg_name
, m
->msg_namelen
);
428 _leave(" = %d [bad addr]", ret
);
435 switch (rx
->sk
.sk_state
) {
437 rx
->srx
.srx_family
= AF_RXRPC
;
438 rx
->srx
.srx_service
= 0;
439 rx
->srx
.transport_type
= SOCK_DGRAM
;
440 rx
->srx
.transport
.family
= rx
->family
;
441 switch (rx
->family
) {
443 rx
->srx
.transport_len
= sizeof(struct sockaddr_in
);
445 #ifdef CONFIG_AF_RXRPC_IPV6
447 rx
->srx
.transport_len
= sizeof(struct sockaddr_in6
);
454 local
= rxrpc_lookup_local(sock_net(sock
->sk
), &rx
->srx
);
456 ret
= PTR_ERR(local
);
461 rx
->sk
.sk_state
= RXRPC_CLIENT_UNBOUND
;
464 case RXRPC_CLIENT_UNBOUND
:
465 case RXRPC_CLIENT_BOUND
:
467 test_bit(RXRPC_SOCK_CONNECTED
, &rx
->flags
)) {
468 m
->msg_name
= &rx
->connect_srx
;
469 m
->msg_namelen
= sizeof(rx
->connect_srx
);
471 case RXRPC_SERVER_BOUND
:
472 case RXRPC_SERVER_LISTENING
:
473 ret
= rxrpc_do_sendmsg(rx
, m
, len
);
474 /* The socket has been unlocked */
482 release_sock(&rx
->sk
);
484 _leave(" = %d", ret
);
489 * set RxRPC socket options
491 static int rxrpc_setsockopt(struct socket
*sock
, int level
, int optname
,
492 char __user
*optval
, unsigned int optlen
)
494 struct rxrpc_sock
*rx
= rxrpc_sk(sock
->sk
);
495 unsigned int min_sec_level
;
496 u16 service_upgrade
[2];
499 _enter(",%d,%d,,%d", level
, optname
, optlen
);
504 if (level
== SOL_RXRPC
) {
506 case RXRPC_EXCLUSIVE_CONNECTION
:
511 if (rx
->sk
.sk_state
!= RXRPC_UNBOUND
)
513 rx
->exclusive
= true;
516 case RXRPC_SECURITY_KEY
:
521 if (rx
->sk
.sk_state
!= RXRPC_UNBOUND
)
523 ret
= rxrpc_request_key(rx
, optval
, optlen
);
526 case RXRPC_SECURITY_KEYRING
:
531 if (rx
->sk
.sk_state
!= RXRPC_UNBOUND
)
533 ret
= rxrpc_server_keyring(rx
, optval
, optlen
);
536 case RXRPC_MIN_SECURITY_LEVEL
:
538 if (optlen
!= sizeof(unsigned int))
541 if (rx
->sk
.sk_state
!= RXRPC_UNBOUND
)
543 ret
= get_user(min_sec_level
,
544 (unsigned int __user
*) optval
);
548 if (min_sec_level
> RXRPC_SECURITY_MAX
)
550 rx
->min_sec_level
= min_sec_level
;
553 case RXRPC_UPGRADEABLE_SERVICE
:
555 if (optlen
!= sizeof(service_upgrade
) ||
556 rx
->service_upgrade
.from
!= 0)
559 if (rx
->sk
.sk_state
!= RXRPC_SERVER_BOUND2
)
562 if (copy_from_user(service_upgrade
, optval
,
563 sizeof(service_upgrade
)) != 0)
566 if ((service_upgrade
[0] != rx
->srx
.srx_service
||
567 service_upgrade
[1] != rx
->second_service
) &&
568 (service_upgrade
[0] != rx
->second_service
||
569 service_upgrade
[1] != rx
->srx
.srx_service
))
571 rx
->service_upgrade
.from
= service_upgrade
[0];
572 rx
->service_upgrade
.to
= service_upgrade
[1];
583 release_sock(&rx
->sk
);
588 * Get socket options.
590 static int rxrpc_getsockopt(struct socket
*sock
, int level
, int optname
,
591 char __user
*optval
, int __user
*_optlen
)
595 if (level
!= SOL_RXRPC
)
598 if (get_user(optlen
, _optlen
))
602 case RXRPC_SUPPORTED_CMSG
:
603 if (optlen
< sizeof(int))
605 if (put_user(RXRPC__SUPPORTED
- 1, (int __user
*)optval
) ||
606 put_user(sizeof(int), _optlen
))
616 * permit an RxRPC socket to be polled
618 static unsigned int rxrpc_poll(struct file
*file
, struct socket
*sock
,
621 struct sock
*sk
= sock
->sk
;
622 struct rxrpc_sock
*rx
= rxrpc_sk(sk
);
625 sock_poll_wait(file
, sk_sleep(sk
), wait
);
628 /* the socket is readable if there are any messages waiting on the Rx
630 if (!list_empty(&rx
->recvmsg_q
))
631 mask
|= POLLIN
| POLLRDNORM
;
633 /* the socket is writable if there is space to add new data to the
634 * socket; there is no guarantee that any particular call in progress
635 * on the socket may have space in the Tx ACK window */
636 if (rxrpc_writable(sk
))
637 mask
|= POLLOUT
| POLLWRNORM
;
643 * create an RxRPC socket
645 static int rxrpc_create(struct net
*net
, struct socket
*sock
, int protocol
,
648 struct rxrpc_sock
*rx
;
651 _enter("%p,%d", sock
, protocol
);
653 /* we support transport protocol UDP/UDP6 only */
654 if (protocol
!= PF_INET
&&
655 IS_ENABLED(CONFIG_AF_RXRPC_IPV6
) && protocol
!= PF_INET6
)
656 return -EPROTONOSUPPORT
;
658 if (sock
->type
!= SOCK_DGRAM
)
659 return -ESOCKTNOSUPPORT
;
661 sock
->ops
= &rxrpc_rpc_ops
;
662 sock
->state
= SS_UNCONNECTED
;
664 sk
= sk_alloc(net
, PF_RXRPC
, GFP_KERNEL
, &rxrpc_proto
, kern
);
668 sock_init_data(sock
, sk
);
669 sock_set_flag(sk
, SOCK_RCU_FREE
);
670 sk
->sk_state
= RXRPC_UNBOUND
;
671 sk
->sk_write_space
= rxrpc_write_space
;
672 sk
->sk_max_ack_backlog
= 0;
673 sk
->sk_destruct
= rxrpc_sock_destructor
;
676 rx
->family
= protocol
;
679 spin_lock_init(&rx
->incoming_lock
);
680 INIT_LIST_HEAD(&rx
->sock_calls
);
681 INIT_LIST_HEAD(&rx
->to_be_accepted
);
682 INIT_LIST_HEAD(&rx
->recvmsg_q
);
683 rwlock_init(&rx
->recvmsg_lock
);
684 rwlock_init(&rx
->call_lock
);
685 memset(&rx
->srx
, 0, sizeof(rx
->srx
));
687 _leave(" = 0 [%p]", rx
);
692 * Kill all the calls on a socket and shut it down.
694 static int rxrpc_shutdown(struct socket
*sock
, int flags
)
696 struct sock
*sk
= sock
->sk
;
697 struct rxrpc_sock
*rx
= rxrpc_sk(sk
);
700 _enter("%p,%d", sk
, flags
);
702 if (flags
!= SHUT_RDWR
)
704 if (sk
->sk_state
== RXRPC_CLOSE
)
709 spin_lock_bh(&sk
->sk_receive_queue
.lock
);
710 if (sk
->sk_state
< RXRPC_CLOSE
) {
711 sk
->sk_state
= RXRPC_CLOSE
;
712 sk
->sk_shutdown
= SHUTDOWN_MASK
;
716 spin_unlock_bh(&sk
->sk_receive_queue
.lock
);
718 rxrpc_discard_prealloc(rx
);
725 * RxRPC socket destructor
727 static void rxrpc_sock_destructor(struct sock
*sk
)
731 rxrpc_purge_queue(&sk
->sk_receive_queue
);
733 WARN_ON(refcount_read(&sk
->sk_wmem_alloc
));
734 WARN_ON(!sk_unhashed(sk
));
735 WARN_ON(sk
->sk_socket
);
737 if (!sock_flag(sk
, SOCK_DEAD
)) {
738 printk("Attempt to release alive rxrpc socket: %p\n", sk
);
744 * release an RxRPC socket
746 static int rxrpc_release_sock(struct sock
*sk
)
748 struct rxrpc_sock
*rx
= rxrpc_sk(sk
);
750 _enter("%p{%d,%d}", sk
, sk
->sk_state
, refcount_read(&sk
->sk_refcnt
));
752 /* declare the socket closed for business */
754 sk
->sk_shutdown
= SHUTDOWN_MASK
;
756 spin_lock_bh(&sk
->sk_receive_queue
.lock
);
757 sk
->sk_state
= RXRPC_CLOSE
;
758 spin_unlock_bh(&sk
->sk_receive_queue
.lock
);
760 if (rx
->local
&& rcu_access_pointer(rx
->local
->service
) == rx
) {
761 write_lock(&rx
->local
->services_lock
);
762 rcu_assign_pointer(rx
->local
->service
, NULL
);
763 write_unlock(&rx
->local
->services_lock
);
766 /* try to flush out this socket */
767 rxrpc_discard_prealloc(rx
);
768 rxrpc_release_calls_on_socket(rx
);
769 flush_workqueue(rxrpc_workqueue
);
770 rxrpc_purge_queue(&sk
->sk_receive_queue
);
772 rxrpc_put_local(rx
->local
);
776 key_put(rx
->securities
);
777 rx
->securities
= NULL
;
785 * release an RxRPC BSD socket on close() or equivalent
787 static int rxrpc_release(struct socket
*sock
)
789 struct sock
*sk
= sock
->sk
;
791 _enter("%p{%p}", sock
, sk
);
798 return rxrpc_release_sock(sk
);
802 * RxRPC network protocol
804 static const struct proto_ops rxrpc_rpc_ops
= {
806 .owner
= THIS_MODULE
,
807 .release
= rxrpc_release
,
809 .connect
= rxrpc_connect
,
810 .socketpair
= sock_no_socketpair
,
811 .accept
= sock_no_accept
,
812 .getname
= sock_no_getname
,
814 .ioctl
= sock_no_ioctl
,
815 .listen
= rxrpc_listen
,
816 .shutdown
= rxrpc_shutdown
,
817 .setsockopt
= rxrpc_setsockopt
,
818 .getsockopt
= rxrpc_getsockopt
,
819 .sendmsg
= rxrpc_sendmsg
,
820 .recvmsg
= rxrpc_recvmsg
,
821 .mmap
= sock_no_mmap
,
822 .sendpage
= sock_no_sendpage
,
825 static struct proto rxrpc_proto
= {
827 .owner
= THIS_MODULE
,
828 .obj_size
= sizeof(struct rxrpc_sock
),
829 .max_header
= sizeof(struct rxrpc_wire_header
),
832 static const struct net_proto_family rxrpc_family_ops
= {
834 .create
= rxrpc_create
,
835 .owner
= THIS_MODULE
,
839 * initialise and register the RxRPC protocol
841 static int __init
af_rxrpc_init(void)
846 BUILD_BUG_ON(sizeof(struct rxrpc_skb_priv
) > FIELD_SIZEOF(struct sk_buff
, cb
));
848 get_random_bytes(&tmp
, sizeof(tmp
));
852 idr_set_cursor(&rxrpc_client_conn_ids
, tmp
);
855 rxrpc_call_jar
= kmem_cache_create(
856 "rxrpc_call_jar", sizeof(struct rxrpc_call
), 0,
857 SLAB_HWCACHE_ALIGN
, NULL
);
858 if (!rxrpc_call_jar
) {
859 pr_notice("Failed to allocate call jar\n");
863 rxrpc_workqueue
= alloc_workqueue("krxrpcd", 0, 1);
864 if (!rxrpc_workqueue
) {
865 pr_notice("Failed to allocate work queue\n");
866 goto error_work_queue
;
869 ret
= rxrpc_init_security();
871 pr_crit("Cannot initialise security\n");
875 ret
= register_pernet_subsys(&rxrpc_net_ops
);
879 ret
= proto_register(&rxrpc_proto
, 1);
881 pr_crit("Cannot register protocol\n");
885 ret
= sock_register(&rxrpc_family_ops
);
887 pr_crit("Cannot register socket family\n");
891 ret
= register_key_type(&key_type_rxrpc
);
893 pr_crit("Cannot register client key type\n");
897 ret
= register_key_type(&key_type_rxrpc_s
);
899 pr_crit("Cannot register server key type\n");
900 goto error_key_type_s
;
903 ret
= rxrpc_sysctl_init();
905 pr_crit("Cannot register sysctls\n");
912 unregister_key_type(&key_type_rxrpc_s
);
914 unregister_key_type(&key_type_rxrpc
);
916 sock_unregister(PF_RXRPC
);
918 proto_unregister(&rxrpc_proto
);
920 unregister_pernet_subsys(&rxrpc_net_ops
);
922 rxrpc_exit_security();
924 destroy_workqueue(rxrpc_workqueue
);
926 kmem_cache_destroy(rxrpc_call_jar
);
932 * unregister the RxRPC protocol
934 static void __exit
af_rxrpc_exit(void)
938 unregister_key_type(&key_type_rxrpc_s
);
939 unregister_key_type(&key_type_rxrpc
);
940 sock_unregister(PF_RXRPC
);
941 proto_unregister(&rxrpc_proto
);
942 unregister_pernet_subsys(&rxrpc_net_ops
);
943 ASSERTCMP(atomic_read(&rxrpc_n_tx_skbs
), ==, 0);
944 ASSERTCMP(atomic_read(&rxrpc_n_rx_skbs
), ==, 0);
946 /* Make sure the local and peer records pinned by any dying connections
950 rxrpc_destroy_client_conn_ids();
952 destroy_workqueue(rxrpc_workqueue
);
953 rxrpc_exit_security();
954 kmem_cache_destroy(rxrpc_call_jar
);
958 module_init(af_rxrpc_init
);
959 module_exit(af_rxrpc_exit
);