1 /* net/atm/common.c - ATM sockets (common part for PVC and SVC) */
3 /* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
5 #define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__
7 #include <linux/module.h>
8 #include <linux/kmod.h>
9 #include <linux/net.h> /* struct socket, struct proto_ops */
10 #include <linux/atm.h> /* ATM stuff */
11 #include <linux/atmdev.h>
12 #include <linux/socket.h> /* SOL_SOCKET */
13 #include <linux/errno.h> /* error codes */
14 #include <linux/capability.h>
16 #include <linux/sched.h>
17 #include <linux/time.h> /* struct timeval */
18 #include <linux/skbuff.h>
19 #include <linux/bitops.h>
20 #include <linux/init.h>
21 #include <linux/slab.h>
22 #include <net/sock.h> /* struct sock */
23 #include <linux/uaccess.h>
24 #include <linux/poll.h>
26 #include <linux/atomic.h>
28 #include "resources.h" /* atm_find_dev */
29 #include "common.h" /* prototypes */
30 #include "protocols.h" /* atm_init_<transport> */
31 #include "addr.h" /* address registry */
32 #include "signaling.h" /* for WAITING and sigd_attach */
34 struct hlist_head vcc_hash[VCC_HTABLE_SIZE];
35 EXPORT_SYMBOL(vcc_hash);
37 DEFINE_RWLOCK(vcc_sklist_lock);
38 EXPORT_SYMBOL(vcc_sklist_lock);
40 static ATOMIC_NOTIFIER_HEAD(atm_dev_notify_chain);
42 static void __vcc_insert_socket(struct sock *sk)
44 struct atm_vcc *vcc = atm_sk(sk);
45 struct hlist_head *head = &vcc_hash[vcc->vci & (VCC_HTABLE_SIZE - 1)];
46 sk->sk_hash = vcc->vci & (VCC_HTABLE_SIZE - 1);
47 sk_add_node(sk, head);
50 void vcc_insert_socket(struct sock *sk)
52 write_lock_irq(&vcc_sklist_lock);
53 __vcc_insert_socket(sk);
54 write_unlock_irq(&vcc_sklist_lock);
56 EXPORT_SYMBOL(vcc_insert_socket);
58 static void vcc_remove_socket(struct sock *sk)
60 write_lock_irq(&vcc_sklist_lock);
62 write_unlock_irq(&vcc_sklist_lock);
65 static struct sk_buff *alloc_tx(struct atm_vcc *vcc, unsigned int size)
68 struct sock *sk = sk_atm(vcc);
70 if (sk_wmem_alloc_get(sk) && !atm_may_send(vcc, size)) {
71 pr_debug("Sorry: wmem_alloc = %d, size = %d, sndbuf = %d\n",
72 sk_wmem_alloc_get(sk), size, sk->sk_sndbuf);
75 while (!(skb = alloc_skb(size, GFP_KERNEL)))
77 pr_debug("%d += %d\n", sk_wmem_alloc_get(sk), skb->truesize);
78 atomic_add(skb->truesize, &sk->sk_wmem_alloc);
82 static void vcc_sock_destruct(struct sock *sk)
84 if (atomic_read(&sk->sk_rmem_alloc))
85 printk(KERN_DEBUG "%s: rmem leakage (%d bytes) detected.\n",
86 __func__, atomic_read(&sk->sk_rmem_alloc));
88 if (atomic_read(&sk->sk_wmem_alloc))
89 printk(KERN_DEBUG "%s: wmem leakage (%d bytes) detected.\n",
90 __func__, atomic_read(&sk->sk_wmem_alloc));
93 static void vcc_def_wakeup(struct sock *sk)
98 wq = rcu_dereference(sk->sk_wq);
99 if (wq_has_sleeper(wq))
104 static inline int vcc_writable(struct sock *sk)
106 struct atm_vcc *vcc = atm_sk(sk);
108 return (vcc->qos.txtp.max_sdu +
109 atomic_read(&sk->sk_wmem_alloc)) <= sk->sk_sndbuf;
112 static void vcc_write_space(struct sock *sk)
114 struct socket_wq *wq;
118 if (vcc_writable(sk)) {
119 wq = rcu_dereference(sk->sk_wq);
120 if (wq_has_sleeper(wq))
121 wake_up_interruptible(&wq->wait);
123 sk_wake_async(sk, SOCK_WAKE_SPACE, POLL_OUT);
129 static void vcc_release_cb(struct sock *sk)
131 struct atm_vcc *vcc = atm_sk(sk);
134 vcc->release_cb(vcc);
137 static struct proto vcc_proto = {
139 .owner = THIS_MODULE,
140 .obj_size = sizeof(struct atm_vcc),
141 .release_cb = vcc_release_cb,
144 int vcc_create(struct net *net, struct socket *sock, int protocol, int family)
150 if (sock->type == SOCK_STREAM)
152 sk = sk_alloc(net, family, GFP_KERNEL, &vcc_proto);
155 sock_init_data(sock, sk);
156 sk->sk_state_change = vcc_def_wakeup;
157 sk->sk_write_space = vcc_write_space;
161 memset(&vcc->local, 0, sizeof(struct sockaddr_atmsvc));
162 memset(&vcc->remote, 0, sizeof(struct sockaddr_atmsvc));
163 vcc->qos.txtp.max_sdu = 1 << 16; /* for meta VCs */
164 atomic_set(&sk->sk_wmem_alloc, 1);
165 atomic_set(&sk->sk_rmem_alloc, 0);
169 vcc->push_oam = NULL;
170 vcc->release_cb = NULL;
171 vcc->vpi = vcc->vci = 0; /* no VCI/VPI yet */
172 vcc->atm_options = vcc->aal_options = 0;
173 sk->sk_destruct = vcc_sock_destruct;
177 static void vcc_destroy_socket(struct sock *sk)
179 struct atm_vcc *vcc = atm_sk(sk);
182 set_bit(ATM_VF_CLOSE, &vcc->flags);
183 clear_bit(ATM_VF_READY, &vcc->flags);
185 if (vcc->dev->ops->close)
186 vcc->dev->ops->close(vcc);
188 vcc->push(vcc, NULL); /* atmarpd has no push */
189 module_put(vcc->owner);
191 while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) {
192 atm_return(vcc, skb->truesize);
196 module_put(vcc->dev->ops->owner);
197 atm_dev_put(vcc->dev);
200 vcc_remove_socket(sk);
203 int vcc_release(struct socket *sock)
205 struct sock *sk = sock->sk;
209 vcc_destroy_socket(sock->sk);
217 void vcc_release_async(struct atm_vcc *vcc, int reply)
219 struct sock *sk = sk_atm(vcc);
221 set_bit(ATM_VF_CLOSE, &vcc->flags);
222 sk->sk_shutdown |= RCV_SHUTDOWN;
224 clear_bit(ATM_VF_WAITING, &vcc->flags);
225 sk->sk_state_change(sk);
227 EXPORT_SYMBOL(vcc_release_async);
229 void vcc_process_recv_queue(struct atm_vcc *vcc)
231 struct sk_buff_head queue, *rq;
232 struct sk_buff *skb, *tmp;
235 __skb_queue_head_init(&queue);
236 rq = &sk_atm(vcc)->sk_receive_queue;
238 spin_lock_irqsave(&rq->lock, flags);
239 skb_queue_splice_init(rq, &queue);
240 spin_unlock_irqrestore(&rq->lock, flags);
242 skb_queue_walk_safe(&queue, skb, tmp) {
243 __skb_unlink(skb, &queue);
247 EXPORT_SYMBOL(vcc_process_recv_queue);
249 void atm_dev_signal_change(struct atm_dev *dev, char signal)
251 pr_debug("%s signal=%d dev=%p number=%d dev->signal=%d\n",
252 __func__, signal, dev, dev->number, dev->signal);
254 /* atm driver sending invalid signal */
255 WARN_ON(signal < ATM_PHY_SIG_LOST || signal > ATM_PHY_SIG_FOUND);
257 if (dev->signal == signal)
258 return; /* no change */
260 dev->signal = signal;
262 atomic_notifier_call_chain(&atm_dev_notify_chain, signal, dev);
264 EXPORT_SYMBOL(atm_dev_signal_change);
266 void atm_dev_release_vccs(struct atm_dev *dev)
270 write_lock_irq(&vcc_sklist_lock);
271 for (i = 0; i < VCC_HTABLE_SIZE; i++) {
272 struct hlist_head *head = &vcc_hash[i];
273 struct hlist_node *tmp;
277 sk_for_each_safe(s, tmp, head) {
279 if (vcc->dev == dev) {
280 vcc_release_async(vcc, -EPIPE);
285 write_unlock_irq(&vcc_sklist_lock);
287 EXPORT_SYMBOL(atm_dev_release_vccs);
289 static int adjust_tp(struct atm_trafprm *tp, unsigned char aal)
293 if (!tp->traffic_class)
297 max_sdu = ATM_CELL_SIZE-1;
300 max_sdu = ATM_MAX_AAL34_PDU;
303 pr_warning("AAL problems ... (%d)\n", aal);
306 max_sdu = ATM_MAX_AAL5_PDU;
309 tp->max_sdu = max_sdu;
310 else if (tp->max_sdu > max_sdu)
313 tp->max_cdv = ATM_MAX_CDV;
317 static int check_ci(const struct atm_vcc *vcc, short vpi, int vci)
319 struct hlist_head *head = &vcc_hash[vci & (VCC_HTABLE_SIZE - 1)];
321 struct atm_vcc *walk;
323 sk_for_each(s, head) {
325 if (walk->dev != vcc->dev)
327 if (test_bit(ATM_VF_ADDR, &walk->flags) && walk->vpi == vpi &&
328 walk->vci == vci && ((walk->qos.txtp.traffic_class !=
329 ATM_NONE && vcc->qos.txtp.traffic_class != ATM_NONE) ||
330 (walk->qos.rxtp.traffic_class != ATM_NONE &&
331 vcc->qos.rxtp.traffic_class != ATM_NONE)))
335 /* allow VCCs with same VPI/VCI iff they don't collide on
336 TX/RX (but we may refuse such sharing for other reasons,
337 e.g. if protocol requires to have both channels) */
342 static int find_ci(const struct atm_vcc *vcc, short *vpi, int *vci)
344 static short p; /* poor man's per-device cache */
350 if (*vpi != ATM_VPI_ANY && *vci != ATM_VCI_ANY) {
351 err = check_ci(vcc, *vpi, *vci);
354 /* last scan may have left values out of bounds for current device */
355 if (*vpi != ATM_VPI_ANY)
357 else if (p >= 1 << vcc->dev->ci_range.vpi_bits)
359 if (*vci != ATM_VCI_ANY)
361 else if (c < ATM_NOT_RSV_VCI || c >= 1 << vcc->dev->ci_range.vci_bits)
366 if (!check_ci(vcc, p, c)) {
371 if (*vci == ATM_VCI_ANY) {
373 if (c >= 1 << vcc->dev->ci_range.vci_bits)
376 if ((c == ATM_NOT_RSV_VCI || *vci != ATM_VCI_ANY) &&
377 *vpi == ATM_VPI_ANY) {
379 if (p >= 1 << vcc->dev->ci_range.vpi_bits)
382 } while (old_p != p || old_c != c);
386 static int __vcc_connect(struct atm_vcc *vcc, struct atm_dev *dev, short vpi,
389 struct sock *sk = sk_atm(vcc);
392 if ((vpi != ATM_VPI_UNSPEC && vpi != ATM_VPI_ANY &&
393 vpi >> dev->ci_range.vpi_bits) || (vci != ATM_VCI_UNSPEC &&
394 vci != ATM_VCI_ANY && vci >> dev->ci_range.vci_bits))
396 if (vci > 0 && vci < ATM_NOT_RSV_VCI && !capable(CAP_NET_BIND_SERVICE))
399 if (!try_module_get(dev->ops->owner))
402 write_lock_irq(&vcc_sklist_lock);
403 if (test_bit(ATM_DF_REMOVED, &dev->flags) ||
404 (error = find_ci(vcc, &vpi, &vci))) {
405 write_unlock_irq(&vcc_sklist_lock);
406 goto fail_module_put;
410 __vcc_insert_socket(sk);
411 write_unlock_irq(&vcc_sklist_lock);
412 switch (vcc->qos.aal) {
414 error = atm_init_aal0(vcc);
415 vcc->stats = &dev->stats.aal0;
418 error = atm_init_aal34(vcc);
419 vcc->stats = &dev->stats.aal34;
422 /* ATM_AAL5 is also used in the "0 for default" case */
423 vcc->qos.aal = ATM_AAL5;
426 error = atm_init_aal5(vcc);
427 vcc->stats = &dev->stats.aal5;
433 error = adjust_tp(&vcc->qos.txtp, vcc->qos.aal);
435 error = adjust_tp(&vcc->qos.rxtp, vcc->qos.aal);
438 pr_debug("VCC %d.%d, AAL %d\n", vpi, vci, vcc->qos.aal);
439 pr_debug(" TX: %d, PCR %d..%d, SDU %d\n",
440 vcc->qos.txtp.traffic_class,
441 vcc->qos.txtp.min_pcr,
442 vcc->qos.txtp.max_pcr,
443 vcc->qos.txtp.max_sdu);
444 pr_debug(" RX: %d, PCR %d..%d, SDU %d\n",
445 vcc->qos.rxtp.traffic_class,
446 vcc->qos.rxtp.min_pcr,
447 vcc->qos.rxtp.max_pcr,
448 vcc->qos.rxtp.max_sdu);
450 if (dev->ops->open) {
451 error = dev->ops->open(vcc);
458 vcc_remove_socket(sk);
460 module_put(dev->ops->owner);
461 /* ensure we get dev module ref count correct */
466 int vcc_connect(struct socket *sock, int itf, short vpi, int vci)
469 struct atm_vcc *vcc = ATM_SD(sock);
472 pr_debug("(vpi %d, vci %d)\n", vpi, vci);
473 if (sock->state == SS_CONNECTED)
475 if (sock->state != SS_UNCONNECTED)
480 if (vpi != ATM_VPI_UNSPEC && vci != ATM_VCI_UNSPEC)
481 clear_bit(ATM_VF_PARTIAL, &vcc->flags);
483 if (test_bit(ATM_VF_PARTIAL, &vcc->flags))
485 pr_debug("(TX: cl %d,bw %d-%d,sdu %d; "
486 "RX: cl %d,bw %d-%d,sdu %d,AAL %s%d)\n",
487 vcc->qos.txtp.traffic_class, vcc->qos.txtp.min_pcr,
488 vcc->qos.txtp.max_pcr, vcc->qos.txtp.max_sdu,
489 vcc->qos.rxtp.traffic_class, vcc->qos.rxtp.min_pcr,
490 vcc->qos.rxtp.max_pcr, vcc->qos.rxtp.max_sdu,
491 vcc->qos.aal == ATM_AAL5 ? "" :
492 vcc->qos.aal == ATM_AAL0 ? "" : " ??? code ",
493 vcc->qos.aal == ATM_AAL0 ? 0 : vcc->qos.aal);
494 if (!test_bit(ATM_VF_HASQOS, &vcc->flags))
496 if (vcc->qos.txtp.traffic_class == ATM_ANYCLASS ||
497 vcc->qos.rxtp.traffic_class == ATM_ANYCLASS)
499 if (likely(itf != ATM_ITF_ANY)) {
500 dev = try_then_request_module(atm_dev_lookup(itf),
501 "atm-device-%d", itf);
504 mutex_lock(&atm_dev_mutex);
505 if (!list_empty(&atm_devs)) {
506 dev = list_entry(atm_devs.next,
507 struct atm_dev, dev_list);
510 mutex_unlock(&atm_dev_mutex);
514 error = __vcc_connect(vcc, dev, vpi, vci);
519 if (vpi == ATM_VPI_UNSPEC || vci == ATM_VCI_UNSPEC)
520 set_bit(ATM_VF_PARTIAL, &vcc->flags);
521 if (test_bit(ATM_VF_READY, &ATM_SD(sock)->flags))
522 sock->state = SS_CONNECTED;
526 int vcc_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg,
527 size_t size, int flags)
529 struct sock *sk = sock->sk;
532 int copied, error = -EINVAL;
534 if (sock->state != SS_CONNECTED)
537 /* only handle MSG_DONTWAIT and MSG_PEEK */
538 if (flags & ~(MSG_DONTWAIT | MSG_PEEK))
542 if (test_bit(ATM_VF_RELEASED, &vcc->flags) ||
543 test_bit(ATM_VF_CLOSE, &vcc->flags) ||
544 !test_bit(ATM_VF_READY, &vcc->flags))
547 skb = skb_recv_datagram(sk, flags, flags & MSG_DONTWAIT, &error);
554 msg->msg_flags |= MSG_TRUNC;
557 error = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
560 sock_recv_ts_and_drops(msg, sk, skb);
562 if (!(flags & MSG_PEEK)) {
563 pr_debug("%d -= %d\n", atomic_read(&sk->sk_rmem_alloc),
565 atm_return(vcc, skb->truesize);
568 skb_free_datagram(sk, skb);
572 int vcc_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *m,
575 struct sock *sk = sock->sk;
580 const void __user *buff;
584 if (sock->state != SS_CONNECTED) {
592 if (m->msg_iovlen != 1) {
593 error = -ENOSYS; /* fix this later @@@ */
596 buff = m->msg_iov->iov_base;
597 size = m->msg_iov->iov_len;
599 if (test_bit(ATM_VF_RELEASED, &vcc->flags) ||
600 test_bit(ATM_VF_CLOSE, &vcc->flags) ||
601 !test_bit(ATM_VF_READY, &vcc->flags)) {
603 send_sig(SIGPIPE, current, 0);
610 if (size < 0 || size > vcc->qos.txtp.max_sdu) {
615 eff = (size+3) & ~3; /* align to word boundary */
616 prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
618 while (!(skb = alloc_tx(vcc, eff))) {
619 if (m->msg_flags & MSG_DONTWAIT) {
624 if (signal_pending(current)) {
625 error = -ERESTARTSYS;
628 if (test_bit(ATM_VF_RELEASED, &vcc->flags) ||
629 test_bit(ATM_VF_CLOSE, &vcc->flags) ||
630 !test_bit(ATM_VF_READY, &vcc->flags)) {
632 send_sig(SIGPIPE, current, 0);
635 prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
637 finish_wait(sk_sleep(sk), &wait);
640 skb->dev = NULL; /* for paths shared with net_device interfaces */
641 ATM_SKB(skb)->atm_options = vcc->atm_options;
642 if (copy_from_user(skb_put(skb, size), buff, size)) {
648 memset(skb->data + size, 0, eff-size);
649 error = vcc->dev->ops->send(vcc, skb);
650 error = error ? error : size;
656 unsigned int vcc_poll(struct file *file, struct socket *sock, poll_table *wait)
658 struct sock *sk = sock->sk;
662 sock_poll_wait(file, sk_sleep(sk), wait);
667 /* exceptional events */
671 if (test_bit(ATM_VF_RELEASED, &vcc->flags) ||
672 test_bit(ATM_VF_CLOSE, &vcc->flags))
676 if (!skb_queue_empty(&sk->sk_receive_queue))
677 mask |= POLLIN | POLLRDNORM;
680 if (sock->state == SS_CONNECTING &&
681 test_bit(ATM_VF_WAITING, &vcc->flags))
684 if (vcc->qos.txtp.traffic_class != ATM_NONE &&
686 mask |= POLLOUT | POLLWRNORM | POLLWRBAND;
691 static int atm_change_qos(struct atm_vcc *vcc, struct atm_qos *qos)
696 * Don't let the QoS change the already connected AAL type nor the
699 if (qos->aal != vcc->qos.aal ||
700 qos->rxtp.traffic_class != vcc->qos.rxtp.traffic_class ||
701 qos->txtp.traffic_class != vcc->qos.txtp.traffic_class)
703 error = adjust_tp(&qos->txtp, qos->aal);
705 error = adjust_tp(&qos->rxtp, qos->aal);
708 if (!vcc->dev->ops->change_qos)
710 if (sk_atm(vcc)->sk_family == AF_ATMPVC)
711 return vcc->dev->ops->change_qos(vcc, qos, ATM_MF_SET);
712 return svc_change_qos(vcc, qos);
715 static int check_tp(const struct atm_trafprm *tp)
717 /* @@@ Should be merged with adjust_tp */
718 if (!tp->traffic_class || tp->traffic_class == ATM_ANYCLASS)
720 if (tp->traffic_class != ATM_UBR && !tp->min_pcr && !tp->pcr &&
723 if (tp->min_pcr == ATM_MAX_PCR)
725 if (tp->min_pcr && tp->max_pcr && tp->max_pcr != ATM_MAX_PCR &&
726 tp->min_pcr > tp->max_pcr)
729 * We allow pcr to be outside [min_pcr,max_pcr], because later
730 * adjustment may still push it in the valid range.
735 static int check_qos(const struct atm_qos *qos)
739 if (!qos->txtp.traffic_class && !qos->rxtp.traffic_class)
741 if (qos->txtp.traffic_class != qos->rxtp.traffic_class &&
742 qos->txtp.traffic_class && qos->rxtp.traffic_class &&
743 qos->txtp.traffic_class != ATM_ANYCLASS &&
744 qos->rxtp.traffic_class != ATM_ANYCLASS)
746 error = check_tp(&qos->txtp);
749 return check_tp(&qos->rxtp);
752 int vcc_setsockopt(struct socket *sock, int level, int optname,
753 char __user *optval, unsigned int optlen)
759 if (__SO_LEVEL_MATCH(optname, level) && optlen != __SO_SIZE(optname))
768 if (copy_from_user(&qos, optval, sizeof(qos)))
770 error = check_qos(&qos);
773 if (sock->state == SS_CONNECTED)
774 return atm_change_qos(vcc, &qos);
775 if (sock->state != SS_UNCONNECTED)
778 set_bit(ATM_VF_HASQOS, &vcc->flags);
782 if (get_user(value, (unsigned long __user *)optval))
785 vcc->atm_options |= ATM_ATMOPT_CLP;
787 vcc->atm_options &= ~ATM_ATMOPT_CLP;
790 if (level == SOL_SOCKET)
794 if (!vcc->dev || !vcc->dev->ops->setsockopt)
796 return vcc->dev->ops->setsockopt(vcc, level, optname, optval, optlen);
799 int vcc_getsockopt(struct socket *sock, int level, int optname,
800 char __user *optval, int __user *optlen)
805 if (get_user(len, optlen))
807 if (__SO_LEVEL_MATCH(optname, level) && len != __SO_SIZE(optname))
813 if (!test_bit(ATM_VF_HASQOS, &vcc->flags))
815 return copy_to_user(optval, &vcc->qos, sizeof(vcc->qos))
818 return put_user(vcc->atm_options & ATM_ATMOPT_CLP ? 1 : 0,
819 (unsigned long __user *)optval) ? -EFAULT : 0;
822 struct sockaddr_atmpvc pvc;
824 if (!vcc->dev || !test_bit(ATM_VF_ADDR, &vcc->flags))
826 memset(&pvc, 0, sizeof(pvc));
827 pvc.sap_family = AF_ATMPVC;
828 pvc.sap_addr.itf = vcc->dev->number;
829 pvc.sap_addr.vpi = vcc->vpi;
830 pvc.sap_addr.vci = vcc->vci;
831 return copy_to_user(optval, &pvc, sizeof(pvc)) ? -EFAULT : 0;
834 if (level == SOL_SOCKET)
838 if (!vcc->dev || !vcc->dev->ops->getsockopt)
840 return vcc->dev->ops->getsockopt(vcc, level, optname, optval, len);
843 int register_atmdevice_notifier(struct notifier_block *nb)
845 return atomic_notifier_chain_register(&atm_dev_notify_chain, nb);
847 EXPORT_SYMBOL_GPL(register_atmdevice_notifier);
849 void unregister_atmdevice_notifier(struct notifier_block *nb)
851 atomic_notifier_chain_unregister(&atm_dev_notify_chain, nb);
853 EXPORT_SYMBOL_GPL(unregister_atmdevice_notifier);
855 static int __init atm_init(void)
859 error = proto_register(&vcc_proto, 0);
862 error = atmpvc_init();
864 pr_err("atmpvc_init() failed with %d\n", error);
865 goto out_unregister_vcc_proto;
867 error = atmsvc_init();
869 pr_err("atmsvc_init() failed with %d\n", error);
870 goto out_atmpvc_exit;
872 error = atm_proc_init();
874 pr_err("atm_proc_init() failed with %d\n", error);
875 goto out_atmsvc_exit;
877 error = atm_sysfs_init();
879 pr_err("atm_sysfs_init() failed with %d\n", error);
880 goto out_atmproc_exit;
890 out_unregister_vcc_proto:
891 proto_unregister(&vcc_proto);
895 static void __exit atm_exit(void)
901 proto_unregister(&vcc_proto);
904 subsys_initcall(atm_init);
906 module_exit(atm_exit);
908 MODULE_LICENSE("GPL");
909 MODULE_ALIAS_NETPROTO(PF_ATMPVC);
910 MODULE_ALIAS_NETPROTO(PF_ATMSVC);