2 * An implementation of the Acorn Econet and AUN protocols.
3 * Philip Blundell <philb@gnu.org>
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version
8 * 2 of the License, or (at your option) any later version.
12 #include <linux/config.h>
13 #include <linux/module.h>
15 #include <linux/types.h>
16 #include <linux/kernel.h>
17 #include <linux/sched.h>
18 #include <linux/string.h>
20 #include <linux/socket.h>
21 #include <linux/sockios.h>
23 #include <linux/errno.h>
24 #include <linux/interrupt.h>
25 #include <linux/if_ether.h>
26 #include <linux/netdevice.h>
27 #include <linux/inetdevice.h>
28 #include <linux/route.h>
29 #include <linux/inet.h>
30 #include <linux/etherdevice.h>
31 #include <linux/if_arp.h>
32 #include <linux/wireless.h>
33 #include <linux/skbuff.h>
35 #include <net/inet_common.h>
36 #include <linux/stat.h>
37 #include <linux/init.h>
38 #include <linux/if_ec.h>
41 #include <linux/spinlock.h>
43 #include <asm/uaccess.h>
44 #include <asm/system.h>
45 #include <asm/bitops.h>
47 static struct proto_ops econet_ops;
48 static struct hlist_head econet_sklist;
49 static rwlock_t econet_lock = RW_LOCK_UNLOCKED;
51 /* Since there are only 256 possible network numbers (or fewer, depends
52 how you count) it makes sense to use a simple lookup table. */
53 static struct net_device *net2dev_map[256];
55 #define EC_PORT_IP 0xd2
57 #ifdef CONFIG_ECONET_AUNUDP
58 static spinlock_t aun_queue_lock;
59 static struct socket *udpsock;
60 #define AUN_PORT 0x8000
65 unsigned char code; /* AUN magic protocol byte */
72 static unsigned long aun_seq;
74 /* Queue of packets waiting to be transmitted. */
75 static struct sk_buff_head aun_queue;
76 static struct timer_list ab_cleanup_timer;
78 #endif /* CONFIG_ECONET_AUNUDP */
80 /* Per-packet information */
83 struct sockaddr_ec sec;
84 unsigned long cookie; /* Supplied by user. */
85 #ifdef CONFIG_ECONET_AUNUDP
87 unsigned long seq; /* Sequencing */
88 unsigned long timeout; /* Timeout */
89 unsigned long start; /* jiffies */
91 #ifdef CONFIG_ECONET_NATIVE
92 void (*sent)(struct sk_buff *, int result);
96 static void econet_remove_socket(struct hlist_head *list, struct sock *sk)
98 write_lock_bh(&econet_lock);
100 write_unlock_bh(&econet_lock);
103 static void econet_insert_socket(struct hlist_head *list, struct sock *sk)
105 write_lock_bh(&econet_lock);
106 sk_add_node(sk, list);
107 write_unlock_bh(&econet_lock);
111 * Pull a packet from our receive queue and hand it to the user.
112 * If necessary we block.
115 static int econet_recvmsg(struct kiocb *iocb, struct socket *sock,
116 struct msghdr *msg, size_t len, int flags)
118 struct sock *sk = sock->sk;
123 msg->msg_namelen = sizeof(struct sockaddr_ec);
126 * Call the generic datagram receiver. This handles all sorts
127 * of horrible races and re-entrancy so we can forget about it
128 * in the protocol layers.
130 * Now it will return ENETDOWN, if device have just gone down,
131 * but then it will block.
134 skb=skb_recv_datagram(sk,flags,flags&MSG_DONTWAIT,&err);
137 * An error occurred so return it. Because skb_recv_datagram()
138 * handles the blocking we don't see and worry about blocking
146 * You lose any data beyond the buffer you gave. If it worries a
147 * user program they can ask the device for its MTU anyway.
154 msg->msg_flags|=MSG_TRUNC;
157 /* We can't use skb_copy_datagram here */
158 err = memcpy_toiovec(msg->msg_iov, skb->data, copied);
161 sk->sk_stamp = skb->stamp;
164 memcpy(msg->msg_name, skb->cb, msg->msg_namelen);
167 * Free or return the buffer as appropriate. Again this
168 * hides all the races and re-entrancy issues from us.
173 skb_free_datagram(sk, skb);
179 * Bind an Econet socket.
182 static int econet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
184 struct sockaddr_ec *sec = (struct sockaddr_ec *)uaddr;
185 struct sock *sk=sock->sk;
186 struct econet_opt *eo = ec_sk(sk);
192 if (addr_len < sizeof(struct sockaddr_ec) ||
193 sec->sec_family != AF_ECONET)
197 eo->port = sec->port;
198 eo->station = sec->addr.station;
199 eo->net = sec->addr.net;
204 #if defined(CONFIG_ECONET_AUNUDP) || defined(CONFIG_ECONET_NATIVE)
206 * Queue a transmit result for the user to be told about.
209 static void tx_result(struct sock *sk, unsigned long cookie, int result)
211 struct sk_buff *skb = alloc_skb(0, GFP_ATOMIC);
213 struct sockaddr_ec *sec;
217 printk(KERN_DEBUG "ec: memory squeeze, transmit result dropped.\n");
221 eb = (struct ec_cb *)&skb->cb;
222 sec = (struct sockaddr_ec *)&eb->sec;
223 memset(sec, 0, sizeof(struct sockaddr_ec));
224 sec->cookie = cookie;
225 sec->type = ECTYPE_TRANSMIT_STATUS | result;
226 sec->sec_family = AF_ECONET;
228 if (sock_queue_rcv_skb(sk, skb) < 0)
233 #ifdef CONFIG_ECONET_NATIVE
235 * Called by the Econet hardware driver when a packet transmit
236 * has completed. Tell the user.
239 static void ec_tx_done(struct sk_buff *skb, int result)
241 struct ec_cb *eb = (struct ec_cb *)&skb->cb;
242 tx_result(skb->sk, eb->cookie, result);
247 * Send a packet. We have to work out which device it's going out on
248 * and hence whether to use real Econet or the UDP emulation.
251 static int econet_sendmsg(struct kiocb *iocb, struct socket *sock,
252 struct msghdr *msg, size_t len)
254 struct sock *sk = sock->sk;
255 struct sockaddr_ec *saddr=(struct sockaddr_ec *)msg->msg_name;
256 struct net_device *dev;
259 unsigned char port, cb;
260 #if defined(CONFIG_ECONET_AUNUDP) || defined(CONFIG_ECONET_NATIVE)
264 #ifdef CONFIG_ECONET_AUNUDP
265 struct msghdr udpmsg;
266 struct iovec iov[msg->msg_iovlen+1];
268 struct sockaddr_in udpdest;
269 __kernel_size_t size;
278 if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_CMSG_COMPAT))
282 * Get and verify the address.
286 struct econet_opt *eo = ec_sk(sk);
288 addr.station = eo->station;
293 if (msg->msg_namelen < sizeof(struct sockaddr_ec))
295 addr.station = saddr->addr.station;
296 addr.net = saddr->addr.net;
301 /* Look for a device with the right network number. */
302 dev = net2dev_map[addr.net];
304 /* If not directly reachable, use some default */
307 dev = net2dev_map[0];
308 /* No interfaces at all? */
313 if (len + 15 > dev->mtu)
316 if (dev->type == ARPHRD_ECONET)
318 /* Real hardware Econet. We're not worthy etc. */
319 #ifdef CONFIG_ECONET_NATIVE
320 unsigned short proto = 0;
324 skb = sock_alloc_send_skb(sk, len+LL_RESERVED_SPACE(dev),
325 msg->msg_flags & MSG_DONTWAIT, &err);
329 skb_reserve(skb, LL_RESERVED_SPACE(dev));
330 skb->nh.raw = skb->data;
332 eb = (struct ec_cb *)&skb->cb;
334 /* BUG: saddr may be NULL */
335 eb->cookie = saddr->cookie;
337 eb->sent = ec_tx_done;
339 if (dev->hard_header) {
341 struct ec_framehdr *fh;
343 res = dev->hard_header(skb, dev, ntohs(proto),
345 /* Poke in our control byte and
346 port number. Hack, hack. */
347 fh = (struct ec_framehdr *)(skb->data);
350 if (sock->type != SOCK_DGRAM) {
351 skb->tail = skb->data;
357 /* Copy the data. Returns -EFAULT on error */
358 err = memcpy_fromiovec(skb_put(skb,len), msg->msg_iov, len);
359 skb->protocol = proto;
361 skb->priority = sk->sk_priority;
366 if (!(dev->flags & IFF_UP))
388 #ifdef CONFIG_ECONET_AUNUDP
389 /* AUN virtual Econet. */
392 return -ENETDOWN; /* No socket - can't send */
394 /* Make up a UDP datagram and hand it off to some higher intellect. */
396 memset(&udpdest, 0, sizeof(udpdest));
397 udpdest.sin_family = AF_INET;
398 udpdest.sin_port = htons(AUN_PORT);
400 /* At the moment we use the stupid Acorn scheme of Econet address
401 y.x maps to IP a.b.c.x. This should be replaced with something
402 more flexible and more aware of subnet masks. */
404 struct in_device *idev = in_dev_get(dev);
405 unsigned long network = 0;
407 read_lock(&idev->lock);
409 network = ntohl(idev->ifa_list->ifa_address) &
410 0xffffff00; /* !!! */
411 read_unlock(&idev->lock);
414 udpdest.sin_addr.s_addr = htonl(network | addr.station);
419 ah.code = 2; /* magic */
422 /* tack our header on the front of the iovec */
423 size = sizeof(struct aunhdr);
425 * XXX: that is b0rken. We can't mix userland and kernel pointers
426 * in iovec, since on a lot of platforms copy_from_user() will
427 * *not* work with the kernel and userland ones at the same time,
428 * regardless of what we do with set_fs(). And we are talking about
429 * econet-over-ethernet here, so "it's only ARM anyway" doesn't
430 * apply. Any suggestions on fixing that code? -- AV
432 iov[0].iov_base = (void *)&ah;
433 iov[0].iov_len = size;
434 for (i = 0; i < msg->msg_iovlen; i++) {
435 void __user *base = msg->msg_iov[i].iov_base;
436 size_t len = msg->msg_iov[i].iov_len;
437 /* Check it now since we switch to KERNEL_DS later. */
438 if ((err = verify_area(VERIFY_READ, base, len)) < 0)
440 iov[i+1].iov_base = base;
441 iov[i+1].iov_len = len;
445 /* Get a skbuff (no data, just holds our cb information) */
446 if ((skb = sock_alloc_send_skb(sk, 0,
447 msg->msg_flags & MSG_DONTWAIT, &err)) == NULL)
450 eb = (struct ec_cb *)&skb->cb;
452 eb->cookie = saddr->cookie;
453 eb->timeout = (5*HZ);
456 eb->seq = (aun_seq++);
459 skb_queue_tail(&aun_queue, skb);
461 udpmsg.msg_name = (void *)&udpdest;
462 udpmsg.msg_namelen = sizeof(udpdest);
463 udpmsg.msg_iov = &iov[0];
464 udpmsg.msg_iovlen = msg->msg_iovlen + 1;
465 udpmsg.msg_control = NULL;
466 udpmsg.msg_controllen = 0;
469 oldfs = get_fs(); set_fs(KERNEL_DS); /* More privs :-) */
470 err = sock_sendmsg(udpsock, &udpmsg, size);
479 * Look up the address of a socket.
482 static int econet_getname(struct socket *sock, struct sockaddr *uaddr,
483 int *uaddr_len, int peer)
485 struct sock *sk = sock->sk;
486 struct econet_opt *eo = ec_sk(sk);
487 struct sockaddr_ec *sec = (struct sockaddr_ec *)uaddr;
492 sec->sec_family = AF_ECONET;
493 sec->port = eo->port;
494 sec->addr.station = eo->station;
495 sec->addr.net = eo->net;
497 *uaddr_len = sizeof(*sec);
501 static void econet_destroy_timer(unsigned long data)
503 struct sock *sk=(struct sock *)data;
505 if (!atomic_read(&sk->sk_wmem_alloc) &&
506 !atomic_read(&sk->sk_rmem_alloc)) {
511 sk->sk_timer.expires = jiffies + 10 * HZ;
512 add_timer(&sk->sk_timer);
513 printk(KERN_DEBUG "econet socket destroy delayed\n");
517 * Close an econet socket.
520 static int econet_release(struct socket *sock)
522 struct sock *sk = sock->sk;
527 econet_remove_socket(&econet_sklist, sk);
530 * Now the socket is dead. No more input will appear.
533 sk->sk_state_change(sk); /* It is useless. Just for sanity. */
536 sk->sk_socket = NULL;
537 sock_set_flag(sk, SOCK_DEAD);
541 skb_queue_purge(&sk->sk_receive_queue);
543 if (atomic_read(&sk->sk_rmem_alloc) ||
544 atomic_read(&sk->sk_wmem_alloc)) {
545 sk->sk_timer.data = (unsigned long)sk;
546 sk->sk_timer.expires = jiffies + HZ;
547 sk->sk_timer.function = econet_destroy_timer;
548 add_timer(&sk->sk_timer);
557 * Create an Econet socket
560 static int econet_create(struct socket *sock, int protocol)
563 struct econet_opt *eo;
566 /* Econet only provides datagram services. */
567 if (sock->type != SOCK_DGRAM)
568 return -ESOCKTNOSUPPORT;
570 sock->state = SS_UNCONNECTED;
573 sk = sk_alloc(PF_ECONET, GFP_KERNEL, 1, NULL);
578 sock->ops = &econet_ops;
579 sock_init_data(sock,sk);
580 sk_set_owner(sk, THIS_MODULE);
582 eo = sk->sk_protinfo = kmalloc(sizeof(*eo), GFP_KERNEL);
585 memset(eo, 0, sizeof(*eo));
587 sk->sk_family = PF_ECONET;
590 econet_insert_socket(&econet_sklist, sk);
600 * Handle Econet specific ioctls
603 static int ec_dev_ioctl(struct socket *sock, unsigned int cmd, void __user *arg)
606 struct ec_device *edev;
607 struct net_device *dev;
608 struct sockaddr_ec *sec;
611 * Fetch the caller's info block into kernel space
614 if (copy_from_user(&ifr, arg, sizeof(struct ifreq)))
617 if ((dev = dev_get_by_name(ifr.ifr_name)) == NULL)
620 sec = (struct sockaddr_ec *)&ifr.ifr_addr;
628 /* Magic up a new one. */
629 edev = kmalloc(sizeof(struct ec_device), GFP_KERNEL);
631 printk("af_ec: memory squeeze.\n");
635 memset(edev, 0, sizeof(struct ec_device));
639 net2dev_map[edev->net] = NULL;
640 edev->station = sec->addr.station;
641 edev->net = sec->addr.net;
642 net2dev_map[sec->addr.net] = dev;
644 net2dev_map[0] = dev;
655 memset(sec, 0, sizeof(struct sockaddr_ec));
656 sec->addr.station = edev->station;
657 sec->addr.net = edev->net;
658 sec->sec_family = AF_ECONET;
660 if (copy_to_user(arg, &ifr, sizeof(struct ifreq)))
670 * Handle generic ioctls
673 static int econet_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
675 struct sock *sk = sock->sk;
676 void __user *argp = (void __user *)arg;
680 return sock_get_timestamp(sk, argp);
684 return ec_dev_ioctl(sock, cmd, argp);
688 return dev_ioctl(cmd, argp);
694 static struct net_proto_family econet_family_ops = {
696 .create = econet_create,
697 .owner = THIS_MODULE,
700 static struct proto_ops SOCKOPS_WRAPPED(econet_ops) = {
702 .owner = THIS_MODULE,
703 .release = econet_release,
705 .connect = sock_no_connect,
706 .socketpair = sock_no_socketpair,
707 .accept = sock_no_accept,
708 .getname = econet_getname,
709 .poll = datagram_poll,
710 .ioctl = econet_ioctl,
711 .listen = sock_no_listen,
712 .shutdown = sock_no_shutdown,
713 .setsockopt = sock_no_setsockopt,
714 .getsockopt = sock_no_getsockopt,
715 .sendmsg = econet_sendmsg,
716 .recvmsg = econet_recvmsg,
717 .mmap = sock_no_mmap,
718 .sendpage = sock_no_sendpage,
721 #include <linux/smp_lock.h>
722 SOCKOPS_WRAP(econet, PF_ECONET);
724 #if defined(CONFIG_ECONET_AUNUDP) || defined(CONFIG_ECONET_NATIVE)
726 * Find the listening socket, if any, for the given data.
729 static struct sock *ec_listening_socket(unsigned char port, unsigned char
730 station, unsigned char net)
733 struct hlist_node *node;
735 sk_for_each(sk, node, &econet_sklist) {
736 struct econet_opt *opt = ec_sk(sk);
737 if ((opt->port == port || opt->port == 0) &&
738 (opt->station == station || opt->station == 0) &&
739 (opt->net == net || opt->net == 0))
748 * Queue a received packet for a socket.
751 static int ec_queue_packet(struct sock *sk, struct sk_buff *skb,
752 unsigned char stn, unsigned char net,
753 unsigned char cb, unsigned char port)
755 struct ec_cb *eb = (struct ec_cb *)&skb->cb;
756 struct sockaddr_ec *sec = (struct sockaddr_ec *)&eb->sec;
758 memset(sec, 0, sizeof(struct sockaddr_ec));
759 sec->sec_family = AF_ECONET;
760 sec->type = ECTYPE_PACKET_RECEIVED;
764 sec->addr.station = stn;
766 return sock_queue_rcv_skb(sk, skb);
770 #ifdef CONFIG_ECONET_AUNUDP
772 * Send an AUN protocol response.
775 static void aun_send_response(__u32 addr, unsigned long seq, int code, int cb)
777 struct sockaddr_in sin;
780 struct msghdr udpmsg;
784 memset(&sin, 0, sizeof(sin));
785 sin.sin_family = AF_INET;
786 sin.sin_port = htons(AUN_PORT);
787 sin.sin_addr.s_addr = addr;
795 iov.iov_base = (void *)&ah;
796 iov.iov_len = sizeof(ah);
798 udpmsg.msg_name = (void *)&sin;
799 udpmsg.msg_namelen = sizeof(sin);
800 udpmsg.msg_iov = &iov;
801 udpmsg.msg_iovlen = 1;
802 udpmsg.msg_control = NULL;
803 udpmsg.msg_controllen = 0;
806 oldfs = get_fs(); set_fs(KERNEL_DS);
807 err = sock_sendmsg(udpsock, &udpmsg, sizeof(ah));
813 * Handle incoming AUN packets. Work out if anybody wants them,
814 * and send positive or negative acknowledgements as appropriate.
817 static void aun_incoming(struct sk_buff *skb, struct aunhdr *ah, size_t len)
819 struct iphdr *ip = skb->nh.iph;
820 unsigned char stn = ntohl(ip->saddr) & 0xff;
822 struct sk_buff *newskb;
823 struct ec_device *edev = skb->dev->ec_ptr;
828 if ((sk = ec_listening_socket(ah->port, stn, edev->net)) == NULL)
829 goto bad; /* Nobody wants it */
831 newskb = alloc_skb((len - sizeof(struct aunhdr) + 15) & ~15,
835 printk(KERN_DEBUG "AUN: memory squeeze, dropping packet.\n");
836 /* Send nack and hope sender tries again */
840 memcpy(skb_put(newskb, len - sizeof(struct aunhdr)), (void *)(ah+1),
841 len - sizeof(struct aunhdr));
843 if (ec_queue_packet(sk, newskb, stn, edev->net, ah->cb, ah->port))
845 /* Socket is bankrupt. */
850 aun_send_response(ip->saddr, ah->handle, 3, 0);
854 aun_send_response(ip->saddr, ah->handle, 4, 0);
858 * Handle incoming AUN transmit acknowledgements. If the sequence
859 * number matches something in our backlog then kill it and tell
860 * the user. If the remote took too long to reply then we may have
861 * dropped the packet already.
864 static void aun_tx_ack(unsigned long seq, int result)
870 spin_lock_irqsave(&aun_queue_lock, flags);
871 skb = skb_peek(&aun_queue);
872 while (skb && skb != (struct sk_buff *)&aun_queue)
874 struct sk_buff *newskb = skb->next;
875 eb = (struct ec_cb *)&skb->cb;
881 spin_unlock_irqrestore(&aun_queue_lock, flags);
882 printk(KERN_DEBUG "AUN: unknown sequence %ld\n", seq);
886 tx_result(skb->sk, eb->cookie, result);
888 spin_unlock_irqrestore(&aun_queue_lock, flags);
893 * Deal with received AUN frames - sort out what type of thing it is
894 * and hand it to the right function.
897 static void aun_data_available(struct sock *sk, int slen)
906 while ((skb = skb_recv_datagram(sk, 0, 1, &err)) == NULL) {
907 if (err == -EAGAIN) {
908 printk(KERN_ERR "AUN: no data available?!");
911 printk(KERN_DEBUG "AUN: recvfrom() error %d\n", -err);
914 data = skb->h.raw + sizeof(struct udphdr);
915 ah = (struct aunhdr *)data;
916 len = skb->len - sizeof(struct udphdr);
922 aun_incoming(skb, ah, len);
925 aun_tx_ack(ah->handle, ECTYPE_TRANSMIT_OK);
928 aun_tx_ack(ah->handle, ECTYPE_TRANSMIT_NOT_LISTENING);
931 /* This isn't quite right yet. */
933 aun_send_response(ip->saddr, ah->handle, 6, ah->cb);
937 printk(KERN_DEBUG "unknown AUN packet (type %d)\n", data[0]);
940 skb_free_datagram(sk, skb);
944 * Called by the timer to manage the AUN transmit queue. If a packet
945 * was sent to a dead or nonexistent host then we will never get an
946 * acknowledgement back. After a few seconds we need to spot this and
950 static void ab_cleanup(unsigned long h)
955 spin_lock_irqsave(&aun_queue_lock, flags);
956 skb = skb_peek(&aun_queue);
957 while (skb && skb != (struct sk_buff *)&aun_queue)
959 struct sk_buff *newskb = skb->next;
960 struct ec_cb *eb = (struct ec_cb *)&skb->cb;
961 if ((jiffies - eb->start) > eb->timeout)
963 tx_result(skb->sk, eb->cookie,
964 ECTYPE_TRANSMIT_NOT_PRESENT);
970 spin_unlock_irqrestore(&aun_queue_lock, flags);
972 mod_timer(&ab_cleanup_timer, jiffies + (HZ*2));
975 static int __init aun_udp_initialise(void)
978 struct sockaddr_in sin;
980 skb_queue_head_init(&aun_queue);
981 spin_lock_init(&aun_queue_lock);
982 init_timer(&ab_cleanup_timer);
983 ab_cleanup_timer.expires = jiffies + (HZ*2);
984 ab_cleanup_timer.function = ab_cleanup;
985 add_timer(&ab_cleanup_timer);
987 memset(&sin, 0, sizeof(sin));
988 sin.sin_port = htons(AUN_PORT);
990 /* We can count ourselves lucky Acorn machines are too dim to
992 if ((error = sock_create_kern(PF_INET, SOCK_DGRAM, 0, &udpsock)) < 0)
994 printk("AUN: socket error %d\n", -error);
998 udpsock->sk->sk_reuse = 1;
999 udpsock->sk->sk_allocation = GFP_ATOMIC; /* we're going to call it
1002 error = udpsock->ops->bind(udpsock, (struct sockaddr *)&sin,
1006 printk("AUN: bind error %d\n", -error);
1010 udpsock->sk->sk_data_ready = aun_data_available;
1015 sock_release(udpsock);
1021 #ifdef CONFIG_ECONET_NATIVE
1024 * Receive an Econet frame from a device.
1027 static int econet_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt)
1029 struct ec_framehdr *hdr;
1031 struct ec_device *edev = dev->ec_ptr;
1033 if (skb->pkt_type == PACKET_OTHERHOST)
1039 if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL)
1042 if (!pskb_may_pull(skb, sizeof(struct ec_framehdr)))
1045 hdr = (struct ec_framehdr *) skb->data;
1047 /* First check for encapsulated IP */
1048 if (hdr->port == EC_PORT_IP) {
1049 skb->protocol = htons(ETH_P_IP);
1050 skb_pull(skb, sizeof(struct ec_framehdr));
1055 sk = ec_listening_socket(hdr->port, hdr->src_stn, hdr->src_net);
1059 if (ec_queue_packet(sk, skb, edev->net, hdr->src_stn, hdr->cb,
1070 static struct packet_type econet_packet_type = {
1071 .type = __constant_htons(ETH_P_ECONET),
1075 static void econet_hw_initialise(void)
1077 dev_add_pack(&econet_packet_type);
1082 static int econet_notifier(struct notifier_block *this, unsigned long msg, void *data)
1084 struct net_device *dev = (struct net_device *)data;
1085 struct ec_device *edev;
1088 case NETDEV_UNREGISTER:
1089 /* A device has gone down - kill any data we hold for it. */
1093 if (net2dev_map[0] == dev)
1094 net2dev_map[0] = NULL;
1095 net2dev_map[edev->net] = NULL;
1105 static struct notifier_block econet_netdev_notifier = {
1106 .notifier_call =econet_notifier,
1109 static void __exit econet_proto_exit(void)
1111 #ifdef CONFIG_ECONET_AUNUDP
1112 del_timer(&ab_cleanup_timer);
1114 sock_release(udpsock);
1116 unregister_netdevice_notifier(&econet_netdev_notifier);
1117 sock_unregister(econet_family_ops.family);
1120 static int __init econet_proto_init(void)
1122 sock_register(&econet_family_ops);
1123 #ifdef CONFIG_ECONET_AUNUDP
1124 spin_lock_init(&aun_queue_lock);
1125 aun_udp_initialise();
1127 #ifdef CONFIG_ECONET_NATIVE
1128 econet_hw_initialise();
1130 register_netdevice_notifier(&econet_netdev_notifier);
1134 module_init(econet_proto_init);
1135 module_exit(econet_proto_exit);
1137 MODULE_LICENSE("GPL");
1138 MODULE_ALIAS_NETPROTO(PF_ECONET);