--- /dev/null
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)
+ * Copyright (C) Alan Cox GW4PTS (alan@lxorguk.ukuu.org.uk)
+ * Copyright (C) Terry Dawson VK2KTJ (terry@animats.net)
+ * Copyright (C) Tomi Manninen OH2BNS (oh2bns@sral.fi)
+ */
+
+#include <linux/capability.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/socket.h>
+#include <linux/in.h>
+#include <linux/slab.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/spinlock.h>
+#include <linux/timer.h>
+#include <linux/string.h>
+#include <linux/sockios.h>
+#include <linux/net.h>
+#include <linux/stat.h>
+#include <net/net_namespace.h>
+#include <net/ax25.h>
+#include <linux/inet.h>
+#include <linux/netdevice.h>
+#include <linux/if_arp.h>
+#include <linux/skbuff.h>
+#include <net/sock.h>
+#include <asm/uaccess.h>
+#include <linux/fcntl.h>
+#include <linux/termios.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/notifier.h>
+#include <net/rose.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <net/tcp_states.h>
+#include <net/ip.h>
+#include <net/arp.h>
+
+static int rose_ndevs = 10;
+
+int sysctl_rose_restart_request_timeout = ROSE_DEFAULT_T0;
+int sysctl_rose_call_request_timeout = ROSE_DEFAULT_T1;
+int sysctl_rose_reset_request_timeout = ROSE_DEFAULT_T2;
+int sysctl_rose_clear_request_timeout = ROSE_DEFAULT_T3;
+int sysctl_rose_no_activity_timeout = ROSE_DEFAULT_IDLE;
+int sysctl_rose_ack_hold_back_timeout = ROSE_DEFAULT_HB;
+int sysctl_rose_routing_control = ROSE_DEFAULT_ROUTING;
+int sysctl_rose_link_fail_timeout = ROSE_DEFAULT_FAIL_TIMEOUT;
+int sysctl_rose_maximum_vcs = ROSE_DEFAULT_MAXVC;
+int sysctl_rose_window_size = ROSE_DEFAULT_WINDOW_SIZE;
+
+static HLIST_HEAD(rose_list);
+static DEFINE_SPINLOCK(rose_list_lock);
+
+static const struct proto_ops rose_proto_ops;
+
+ax25_address rose_callsign;
+
+/*
+ * ROSE network devices are virtual network devices encapsulating ROSE
+ * frames into AX.25 which will be sent through an AX.25 device, so form a
+ * special "super class" of normal net devices; split their locks off into a
+ * separate class since they always nest.
+ */
+static struct lock_class_key rose_netdev_xmit_lock_key;
+static struct lock_class_key rose_netdev_addr_lock_key;
+
+static void rose_set_lockdep_one(struct net_device *dev,
+ struct netdev_queue *txq,
+ void *_unused)
+{
+ lockdep_set_class(&txq->_xmit_lock, &rose_netdev_xmit_lock_key);
+}
+
+static void rose_set_lockdep_key(struct net_device *dev)
+{
+ lockdep_set_class(&dev->addr_list_lock, &rose_netdev_addr_lock_key);
+ netdev_for_each_tx_queue(dev, rose_set_lockdep_one, NULL);
+}
+
+/*
+ * Convert a ROSE address into text.
+ */
+char *rose2asc(char *buf, const rose_address *addr)
+{
+ if (addr->rose_addr[0] == 0x00 && addr->rose_addr[1] == 0x00 &&
+ addr->rose_addr[2] == 0x00 && addr->rose_addr[3] == 0x00 &&
+ addr->rose_addr[4] == 0x00) {
+ strcpy(buf, "*");
+ } else {
+ sprintf(buf, "%02X%02X%02X%02X%02X", addr->rose_addr[0] & 0xFF,
+ addr->rose_addr[1] & 0xFF,
+ addr->rose_addr[2] & 0xFF,
+ addr->rose_addr[3] & 0xFF,
+ addr->rose_addr[4] & 0xFF);
+ }
+
+ return buf;
+}
+
+/*
+ * Compare two ROSE addresses, 0 == equal.
+ */
+int rosecmp(rose_address *addr1, rose_address *addr2)
+{
+ int i;
+
+ for (i = 0; i < 5; i++)
+ if (addr1->rose_addr[i] != addr2->rose_addr[i])
+ return 1;
+
+ return 0;
+}
+
+/*
+ * Compare two ROSE addresses for only mask digits, 0 == equal.
+ */
+int rosecmpm(rose_address *addr1, rose_address *addr2, unsigned short mask)
+{
+ unsigned int i, j;
+
+ if (mask > 10)
+ return 1;
+
+ for (i = 0; i < mask; i++) {
+ j = i / 2;
+
+ if ((i % 2) != 0) {
+ if ((addr1->rose_addr[j] & 0x0F) != (addr2->rose_addr[j] & 0x0F))
+ return 1;
+ } else {
+ if ((addr1->rose_addr[j] & 0xF0) != (addr2->rose_addr[j] & 0xF0))
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+/*
+ * Socket removal during an interrupt is now safe.
+ */
+static void rose_remove_socket(struct sock *sk)
+{
+ spin_lock_bh(&rose_list_lock);
+ sk_del_node_init(sk);
+ spin_unlock_bh(&rose_list_lock);
+}
+
+/*
+ * Kill all bound sockets on a broken link layer connection to a
+ * particular neighbour.
+ */
+void rose_kill_by_neigh(struct rose_neigh *neigh)
+{
+ struct sock *s;
+
+ spin_lock_bh(&rose_list_lock);
+ sk_for_each(s, &rose_list) {
+ struct rose_sock *rose = rose_sk(s);
+
+ if (rose->neighbour == neigh) {
+ rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
+ rose->neighbour->use--;
+ rose->neighbour = NULL;
+ }
+ }
+ spin_unlock_bh(&rose_list_lock);
+}
+
+/*
+ * Kill all bound sockets on a dropped device.
+ */
+static void rose_kill_by_device(struct net_device *dev)
+{
+ struct sock *s;
+
+ spin_lock_bh(&rose_list_lock);
+ sk_for_each(s, &rose_list) {
+ struct rose_sock *rose = rose_sk(s);
+
+ if (rose->device == dev) {
+ rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
+ rose->neighbour->use--;
+ rose->device = NULL;
+ }
+ }
+ spin_unlock_bh(&rose_list_lock);
+}
+
+/*
+ * Handle device status changes.
+ */
+static int rose_device_event(struct notifier_block *this,
+ unsigned long event, void *ptr)
+{
+ struct net_device *dev = netdev_notifier_info_to_dev(ptr);
+
+ if (!net_eq(dev_net(dev), &init_net))
+ return NOTIFY_DONE;
+
+ if (event != NETDEV_DOWN)
+ return NOTIFY_DONE;
+
+ switch (dev->type) {
+ case ARPHRD_ROSE:
+ rose_kill_by_device(dev);
+ break;
+ case ARPHRD_AX25:
+ rose_link_device_down(dev);
+ rose_rt_device_down(dev);
+ break;
+ }
+
+ return NOTIFY_DONE;
+}
+
+/*
+ * Add a socket to the bound sockets list.
+ */
+static void rose_insert_socket(struct sock *sk)
+{
+
+ spin_lock_bh(&rose_list_lock);
+ sk_add_node(sk, &rose_list);
+ spin_unlock_bh(&rose_list_lock);
+}
+
+/*
+ * Find a socket that wants to accept the Call Request we just
+ * received.
+ */
+static struct sock *rose_find_listener(rose_address *addr, ax25_address *call)
+{
+ struct sock *s;
+
+ spin_lock_bh(&rose_list_lock);
+ sk_for_each(s, &rose_list) {
+ struct rose_sock *rose = rose_sk(s);
+
+ if (!rosecmp(&rose->source_addr, addr) &&
+ !ax25cmp(&rose->source_call, call) &&
+ !rose->source_ndigis && s->sk_state == TCP_LISTEN)
+ goto found;
+ }
+
+ sk_for_each(s, &rose_list) {
+ struct rose_sock *rose = rose_sk(s);
+
+ if (!rosecmp(&rose->source_addr, addr) &&
+ !ax25cmp(&rose->source_call, &null_ax25_address) &&
+ s->sk_state == TCP_LISTEN)
+ goto found;
+ }
+ s = NULL;
+found:
+ spin_unlock_bh(&rose_list_lock);
+ return s;
+}
+
+/*
+ * Find a connected ROSE socket given my LCI and device.
+ */
+struct sock *rose_find_socket(unsigned int lci, struct rose_neigh *neigh)
+{
+ struct sock *s;
+
+ spin_lock_bh(&rose_list_lock);
+ sk_for_each(s, &rose_list) {
+ struct rose_sock *rose = rose_sk(s);
+
+ if (rose->lci == lci && rose->neighbour == neigh)
+ goto found;
+ }
+ s = NULL;
+found:
+ spin_unlock_bh(&rose_list_lock);
+ return s;
+}
+
+/*
+ * Find a unique LCI for a given device.
+ */
+unsigned int rose_new_lci(struct rose_neigh *neigh)
+{
+ int lci;
+
+ if (neigh->dce_mode) {
+ for (lci = 1; lci <= sysctl_rose_maximum_vcs; lci++)
+ if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL)
+ return lci;
+ } else {
+ for (lci = sysctl_rose_maximum_vcs; lci > 0; lci--)
+ if (rose_find_socket(lci, neigh) == NULL && rose_route_free_lci(lci, neigh) == NULL)
+ return lci;
+ }
+
+ return 0;
+}
+
+/*
+ * Deferred destroy.
+ */
+void rose_destroy_socket(struct sock *);
+
+/*
+ * Handler for deferred kills.
+ */
+static void rose_destroy_timer(unsigned long data)
+{
+ rose_destroy_socket((struct sock *)data);
+}
+
+/*
+ * This is called from user mode and the timers. Thus it protects itself
+ * against interrupt users but doesn't worry about being called during
+ * work. Once it is removed from the queue no interrupt or bottom half
+ * will touch it and we are (fairly 8-) ) safe.
+ */
+void rose_destroy_socket(struct sock *sk)
+{
+ struct sk_buff *skb;
+
+ rose_remove_socket(sk);
+ rose_stop_heartbeat(sk);
+ rose_stop_idletimer(sk);
+ rose_stop_timer(sk);
+
+ rose_clear_queues(sk); /* Flush the queues */
+
+ while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) {
+ if (skb->sk != sk) { /* A pending connection */
+ /* Queue the unaccepted socket for death */
+ sock_set_flag(skb->sk, SOCK_DEAD);
+ rose_start_heartbeat(skb->sk);
+ rose_sk(skb->sk)->state = ROSE_STATE_0;
+ }
+
+ kfree_skb(skb);
+ }
+
+ if (sk_has_allocations(sk)) {
+ /* Defer: outstanding buffers */
+ setup_timer(&sk->sk_timer, rose_destroy_timer,
+ (unsigned long)sk);
+ sk->sk_timer.expires = jiffies + 10 * HZ;
+ add_timer(&sk->sk_timer);
+ } else
+ sock_put(sk);
+}
+
+/*
+ * Handling for system calls applied via the various interfaces to a
+ * ROSE socket object.
+ */
+
+static int rose_setsockopt(struct socket *sock, int level, int optname,
+ char __user *optval, unsigned int optlen)
+{
+ struct sock *sk = sock->sk;
+ struct rose_sock *rose = rose_sk(sk);
+ int opt;
+
+ if (level != SOL_ROSE)
+ return -ENOPROTOOPT;
+
+ if (optlen < sizeof(int))
+ return -EINVAL;
+
+ if (get_user(opt, (int __user *)optval))
+ return -EFAULT;
+
+ switch (optname) {
+ case ROSE_DEFER:
+ rose->defer = opt ? 1 : 0;
+ return 0;
+
+ case ROSE_T1:
+ if (opt < 1)
+ return -EINVAL;
+ rose->t1 = opt * HZ;
+ return 0;
+
+ case ROSE_T2:
+ if (opt < 1)
+ return -EINVAL;
+ rose->t2 = opt * HZ;
+ return 0;
+
+ case ROSE_T3:
+ if (opt < 1)
+ return -EINVAL;
+ rose->t3 = opt * HZ;
+ return 0;
+
+ case ROSE_HOLDBACK:
+ if (opt < 1)
+ return -EINVAL;
+ rose->hb = opt * HZ;
+ return 0;
+
+ case ROSE_IDLE:
+ if (opt < 0)
+ return -EINVAL;
+ rose->idle = opt * 60 * HZ;
+ return 0;
+
+ case ROSE_QBITINCL:
+ rose->qbitincl = opt ? 1 : 0;
+ return 0;
+
+ default:
+ return -ENOPROTOOPT;
+ }
+}
+
+static int rose_getsockopt(struct socket *sock, int level, int optname,
+ char __user *optval, int __user *optlen)
+{
+ struct sock *sk = sock->sk;
+ struct rose_sock *rose = rose_sk(sk);
+ int val = 0;
+ int len;
+
+ if (level != SOL_ROSE)
+ return -ENOPROTOOPT;
+
+ if (get_user(len, optlen))
+ return -EFAULT;
+
+ if (len < 0)
+ return -EINVAL;
+
+ switch (optname) {
+ case ROSE_DEFER:
+ val = rose->defer;
+ break;
+
+ case ROSE_T1:
+ val = rose->t1 / HZ;
+ break;
+
+ case ROSE_T2:
+ val = rose->t2 / HZ;
+ break;
+
+ case ROSE_T3:
+ val = rose->t3 / HZ;
+ break;
+
+ case ROSE_HOLDBACK:
+ val = rose->hb / HZ;
+ break;
+
+ case ROSE_IDLE:
+ val = rose->idle / (60 * HZ);
+ break;
+
+ case ROSE_QBITINCL:
+ val = rose->qbitincl;
+ break;
+
+ default:
+ return -ENOPROTOOPT;
+ }
+
+ len = min_t(unsigned int, len, sizeof(int));
+
+ if (put_user(len, optlen))
+ return -EFAULT;
+
+ return copy_to_user(optval, &val, len) ? -EFAULT : 0;
+}
+
+static int rose_listen(struct socket *sock, int backlog)
+{
+ struct sock *sk = sock->sk;
+
+ if (sk->sk_state != TCP_LISTEN) {
+ struct rose_sock *rose = rose_sk(sk);
+
+ rose->dest_ndigis = 0;
+ memset(&rose->dest_addr, 0, ROSE_ADDR_LEN);
+ memset(&rose->dest_call, 0, AX25_ADDR_LEN);
+ memset(rose->dest_digis, 0, AX25_ADDR_LEN * ROSE_MAX_DIGIS);
+ sk->sk_max_ack_backlog = backlog;
+ sk->sk_state = TCP_LISTEN;
+ return 0;
+ }
+
+ return -EOPNOTSUPP;
+}
+
+static struct proto rose_proto = {
+ .name = "ROSE",
+ .owner = THIS_MODULE,
+ .obj_size = sizeof(struct rose_sock),
+};
+
+static int rose_create(struct net *net, struct socket *sock, int protocol,
+ int kern)
+{
+ struct sock *sk;
+ struct rose_sock *rose;
+
+ if (!net_eq(net, &init_net))
+ return -EAFNOSUPPORT;
+
+ if (sock->type != SOCK_SEQPACKET || protocol != 0)
+ return -ESOCKTNOSUPPORT;
+
+ sk = sk_alloc(net, PF_ROSE, GFP_ATOMIC, &rose_proto);
+ if (sk == NULL)
+ return -ENOMEM;
+
+ rose = rose_sk(sk);
+
+ sock_init_data(sock, sk);
+
+ skb_queue_head_init(&rose->ack_queue);
+#ifdef M_BIT
+ skb_queue_head_init(&rose->frag_queue);
+ rose->fraglen = 0;
+#endif
+
+ sock->ops = &rose_proto_ops;
+ sk->sk_protocol = protocol;
+
+ init_timer(&rose->timer);
+ init_timer(&rose->idletimer);
+
+ rose->t1 = msecs_to_jiffies(sysctl_rose_call_request_timeout);
+ rose->t2 = msecs_to_jiffies(sysctl_rose_reset_request_timeout);
+ rose->t3 = msecs_to_jiffies(sysctl_rose_clear_request_timeout);
+ rose->hb = msecs_to_jiffies(sysctl_rose_ack_hold_back_timeout);
+ rose->idle = msecs_to_jiffies(sysctl_rose_no_activity_timeout);
+
+ rose->state = ROSE_STATE_0;
+
+ return 0;
+}
+
+static struct sock *rose_make_new(struct sock *osk)
+{
+ struct sock *sk;
+ struct rose_sock *rose, *orose;
+
+ if (osk->sk_type != SOCK_SEQPACKET)
+ return NULL;
+
+ sk = sk_alloc(sock_net(osk), PF_ROSE, GFP_ATOMIC, &rose_proto);
+ if (sk == NULL)
+ return NULL;
+
+ rose = rose_sk(sk);
+
+ sock_init_data(NULL, sk);
+
+ skb_queue_head_init(&rose->ack_queue);
+#ifdef M_BIT
+ skb_queue_head_init(&rose->frag_queue);
+ rose->fraglen = 0;
+#endif
+
+ sk->sk_type = osk->sk_type;
+ sk->sk_priority = osk->sk_priority;
+ sk->sk_protocol = osk->sk_protocol;
+ sk->sk_rcvbuf = osk->sk_rcvbuf;
+ sk->sk_sndbuf = osk->sk_sndbuf;
+ sk->sk_state = TCP_ESTABLISHED;
+ sock_copy_flags(sk, osk);
+
+ init_timer(&rose->timer);
+ init_timer(&rose->idletimer);
+
+ orose = rose_sk(osk);
+ rose->t1 = orose->t1;
+ rose->t2 = orose->t2;
+ rose->t3 = orose->t3;
+ rose->hb = orose->hb;
+ rose->idle = orose->idle;
+ rose->defer = orose->defer;
+ rose->device = orose->device;
+ rose->qbitincl = orose->qbitincl;
+
+ return sk;
+}
+
+static int rose_release(struct socket *sock)
+{
+ struct sock *sk = sock->sk;
+ struct rose_sock *rose;
+
+ if (sk == NULL) return 0;
+
+ sock_hold(sk);
+ sock_orphan(sk);
+ lock_sock(sk);
+ rose = rose_sk(sk);
+
+ switch (rose->state) {
+ case ROSE_STATE_0:
+ release_sock(sk);
+ rose_disconnect(sk, 0, -1, -1);
+ lock_sock(sk);
+ rose_destroy_socket(sk);
+ break;
+
+ case ROSE_STATE_2:
+ rose->neighbour->use--;
+ release_sock(sk);
+ rose_disconnect(sk, 0, -1, -1);
+ lock_sock(sk);
+ rose_destroy_socket(sk);
+ break;
+
+ case ROSE_STATE_1:
+ case ROSE_STATE_3:
+ case ROSE_STATE_4:
+ case ROSE_STATE_5:
+ rose_clear_queues(sk);
+ rose_stop_idletimer(sk);
+ rose_write_internal(sk, ROSE_CLEAR_REQUEST);
+ rose_start_t3timer(sk);
+ rose->state = ROSE_STATE_2;
+ sk->sk_state = TCP_CLOSE;
+ sk->sk_shutdown |= SEND_SHUTDOWN;
+ sk->sk_state_change(sk);
+ sock_set_flag(sk, SOCK_DEAD);
+ sock_set_flag(sk, SOCK_DESTROY);
+ break;
+
+ default:
+ break;
+ }
+
+ sock->sk = NULL;
+ release_sock(sk);
+ sock_put(sk);
+
+ return 0;
+}
+
+static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
+{
+ struct sock *sk = sock->sk;
+ struct rose_sock *rose = rose_sk(sk);
+ struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
+ struct net_device *dev;
+ ax25_address *source;
+ ax25_uid_assoc *user;
+ int n;
+
+ if (!sock_flag(sk, SOCK_ZAPPED))
+ return -EINVAL;
+
+ if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
+ return -EINVAL;
+
+ if (addr->srose_family != AF_ROSE)
+ return -EINVAL;
+
+ if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
+ return -EINVAL;
+
+ if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS)
+ return -EINVAL;
+
+ if ((dev = rose_dev_get(&addr->srose_addr)) == NULL)
+ return -EADDRNOTAVAIL;
+
+ source = &addr->srose_call;
+
+ user = ax25_findbyuid(current_euid());
+ if (user) {
+ rose->source_call = user->call;
+ ax25_uid_put(user);
+ } else {
+ if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE))
+ return -EACCES;
+ rose->source_call = *source;
+ }
+
+ rose->source_addr = addr->srose_addr;
+ rose->device = dev;
+ rose->source_ndigis = addr->srose_ndigis;
+
+ if (addr_len == sizeof(struct full_sockaddr_rose)) {
+ struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
+ for (n = 0 ; n < addr->srose_ndigis ; n++)
+ rose->source_digis[n] = full_addr->srose_digis[n];
+ } else {
+ if (rose->source_ndigis == 1) {
+ rose->source_digis[0] = addr->srose_digi;
+ }
+ }
+
+ rose_insert_socket(sk);
+
+ sock_reset_flag(sk, SOCK_ZAPPED);
+
+ return 0;
+}
+
+static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags)
+{
+ struct sock *sk = sock->sk;
+ struct rose_sock *rose = rose_sk(sk);
+ struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
+ unsigned char cause, diagnostic;
+ struct net_device *dev;
+ ax25_uid_assoc *user;
+ int n, err = 0;
+
+ if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
+ return -EINVAL;
+
+ if (addr->srose_family != AF_ROSE)
+ return -EINVAL;
+
+ if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
+ return -EINVAL;
+
+ if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS)
+ return -EINVAL;
+
+ /* Source + Destination digis should not exceed ROSE_MAX_DIGIS */
+ if ((rose->source_ndigis + addr->srose_ndigis) > ROSE_MAX_DIGIS)
+ return -EINVAL;
+
+ lock_sock(sk);
+
+ if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) {
+ /* Connect completed during a ERESTARTSYS event */
+ sock->state = SS_CONNECTED;
+ goto out_release;
+ }
+
+ if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) {
+ sock->state = SS_UNCONNECTED;
+ err = -ECONNREFUSED;
+ goto out_release;
+ }
+
+ if (sk->sk_state == TCP_ESTABLISHED) {
+ /* No reconnect on a seqpacket socket */
+ err = -EISCONN;
+ goto out_release;
+ }
+
+ sk->sk_state = TCP_CLOSE;
+ sock->state = SS_UNCONNECTED;
+
+ rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause,
+ &diagnostic, 0);
+ if (!rose->neighbour) {
+ err = -ENETUNREACH;
+ goto out_release;
+ }
+
+ rose->lci = rose_new_lci(rose->neighbour);
+ if (!rose->lci) {
+ err = -ENETUNREACH;
+ goto out_release;
+ }
+
+ if (sock_flag(sk, SOCK_ZAPPED)) { /* Must bind first - autobinding in this may or may not work */
+ sock_reset_flag(sk, SOCK_ZAPPED);
+
+ if ((dev = rose_dev_first()) == NULL) {
+ err = -ENETUNREACH;
+ goto out_release;
+ }
+
+ user = ax25_findbyuid(current_euid());
+ if (!user) {
+ err = -EINVAL;
+ goto out_release;
+ }
+
+ memcpy(&rose->source_addr, dev->dev_addr, ROSE_ADDR_LEN);
+ rose->source_call = user->call;
+ rose->device = dev;
+ ax25_uid_put(user);
+
+ rose_insert_socket(sk); /* Finish the bind */
+ }
+ rose->dest_addr = addr->srose_addr;
+ rose->dest_call = addr->srose_call;
+ rose->rand = ((long)rose & 0xFFFF) + rose->lci;
+ rose->dest_ndigis = addr->srose_ndigis;
+
+ if (addr_len == sizeof(struct full_sockaddr_rose)) {
+ struct full_sockaddr_rose *full_addr = (struct full_sockaddr_rose *)uaddr;
+ for (n = 0 ; n < addr->srose_ndigis ; n++)
+ rose->dest_digis[n] = full_addr->srose_digis[n];
+ } else {
+ if (rose->dest_ndigis == 1) {
+ rose->dest_digis[0] = addr->srose_digi;
+ }
+ }
+
+ /* Move to connecting socket, start sending Connect Requests */
+ sock->state = SS_CONNECTING;
+ sk->sk_state = TCP_SYN_SENT;
+
+ rose->state = ROSE_STATE_1;
+
+ rose->neighbour->use++;
+
+ rose_write_internal(sk, ROSE_CALL_REQUEST);
+ rose_start_heartbeat(sk);
+ rose_start_t1timer(sk);
+
+ /* Now the loop */
+ if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) {
+ err = -EINPROGRESS;
+ goto out_release;
+ }
+
+ /*
+ * A Connect Ack with Choke or timeout or failed routing will go to
+ * closed.
+ */
+ if (sk->sk_state == TCP_SYN_SENT) {
+ DEFINE_WAIT(wait);
+
+ for (;;) {
+ prepare_to_wait(sk_sleep(sk), &wait,
+ TASK_INTERRUPTIBLE);
+ if (sk->sk_state != TCP_SYN_SENT)
+ break;
+ if (!signal_pending(current)) {
+ release_sock(sk);
+ schedule();
+ lock_sock(sk);
+ continue;
+ }
+ err = -ERESTARTSYS;
+ break;
+ }
+ finish_wait(sk_sleep(sk), &wait);
+
+ if (err)
+ goto out_release;
+ }
+
+ if (sk->sk_state != TCP_ESTABLISHED) {
+ sock->state = SS_UNCONNECTED;
+ err = sock_error(sk); /* Always set at this point */
+ goto out_release;
+ }
+
+ sock->state = SS_CONNECTED;
+
+out_release:
+ release_sock(sk);
+
+ return err;
+}
+
+static int rose_accept(struct socket *sock, struct socket *newsock, int flags)
+{
+ struct sk_buff *skb;
+ struct sock *newsk;
+ DEFINE_WAIT(wait);
+ struct sock *sk;
+ int err = 0;
+
+ if ((sk = sock->sk) == NULL)
+ return -EINVAL;
+
+ lock_sock(sk);
+ if (sk->sk_type != SOCK_SEQPACKET) {
+ err = -EOPNOTSUPP;
+ goto out_release;
+ }
+
+ if (sk->sk_state != TCP_LISTEN) {
+ err = -EINVAL;
+ goto out_release;
+ }
+
+ /*
+ * The write queue this time is holding sockets ready to use
+ * hooked into the SABM we saved
+ */
+ for (;;) {
+ prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
+
+ skb = skb_dequeue(&sk->sk_receive_queue);
+ if (skb)
+ break;
+
+ if (flags & O_NONBLOCK) {
+ err = -EWOULDBLOCK;
+ break;
+ }
+ if (!signal_pending(current)) {
+ release_sock(sk);
+ schedule();
+ lock_sock(sk);
+ continue;
+ }
+ err = -ERESTARTSYS;
+ break;
+ }
+ finish_wait(sk_sleep(sk), &wait);
+ if (err)
+ goto out_release;
+
+ newsk = skb->sk;
+ sock_graft(newsk, newsock);
+
+ /* Now attach up the new socket */
+ skb->sk = NULL;
+ kfree_skb(skb);
+ sk->sk_ack_backlog--;
+
+out_release:
+ release_sock(sk);
+
+ return err;
+}
+
+static int rose_getname(struct socket *sock, struct sockaddr *uaddr,
+ int *uaddr_len, int peer)
+{
+ struct full_sockaddr_rose *srose = (struct full_sockaddr_rose *)uaddr;
+ struct sock *sk = sock->sk;
+ struct rose_sock *rose = rose_sk(sk);
+ int n;
+
+ memset(srose, 0, sizeof(*srose));
+ if (peer != 0) {
+ if (sk->sk_state != TCP_ESTABLISHED)
+ return -ENOTCONN;
+ srose->srose_family = AF_ROSE;
+ srose->srose_addr = rose->dest_addr;
+ srose->srose_call = rose->dest_call;
+ srose->srose_ndigis = rose->dest_ndigis;
+ for (n = 0; n < rose->dest_ndigis; n++)
+ srose->srose_digis[n] = rose->dest_digis[n];
+ } else {
+ srose->srose_family = AF_ROSE;
+ srose->srose_addr = rose->source_addr;
+ srose->srose_call = rose->source_call;
+ srose->srose_ndigis = rose->source_ndigis;
+ for (n = 0; n < rose->source_ndigis; n++)
+ srose->srose_digis[n] = rose->source_digis[n];
+ }
+
+ *uaddr_len = sizeof(struct full_sockaddr_rose);
+ return 0;
+}
+
+int rose_rx_call_request(struct sk_buff *skb, struct net_device *dev, struct rose_neigh *neigh, unsigned int lci)
+{
+ struct sock *sk;
+ struct sock *make;
+ struct rose_sock *make_rose;
+ struct rose_facilities_struct facilities;
+ int n;
+
+ skb->sk = NULL; /* Initially we don't know who it's for */
+
+ /*
+ * skb->data points to the rose frame start
+ */
+ memset(&facilities, 0x00, sizeof(struct rose_facilities_struct));
+
+ if (!rose_parse_facilities(skb->data + ROSE_CALL_REQ_FACILITIES_OFF,
+ skb->len - ROSE_CALL_REQ_FACILITIES_OFF,
+ &facilities)) {
+ rose_transmit_clear_request(neigh, lci, ROSE_INVALID_FACILITY, 76);
+ return 0;
+ }
+
+ sk = rose_find_listener(&facilities.source_addr, &facilities.source_call);
+
+ /*
+ * We can't accept the Call Request.
+ */
+ if (sk == NULL || sk_acceptq_is_full(sk) ||
+ (make = rose_make_new(sk)) == NULL) {
+ rose_transmit_clear_request(neigh, lci, ROSE_NETWORK_CONGESTION, 120);
+ return 0;
+ }
+
+ skb->sk = make;
+ make->sk_state = TCP_ESTABLISHED;
+ make_rose = rose_sk(make);
+
+ make_rose->lci = lci;
+ make_rose->dest_addr = facilities.dest_addr;
+ make_rose->dest_call = facilities.dest_call;
+ make_rose->dest_ndigis = facilities.dest_ndigis;
+ for (n = 0 ; n < facilities.dest_ndigis ; n++)
+ make_rose->dest_digis[n] = facilities.dest_digis[n];
+ make_rose->source_addr = facilities.source_addr;
+ make_rose->source_call = facilities.source_call;
+ make_rose->source_ndigis = facilities.source_ndigis;
+ for (n = 0 ; n < facilities.source_ndigis ; n++)
+ make_rose->source_digis[n] = facilities.source_digis[n];
+ make_rose->neighbour = neigh;
+ make_rose->device = dev;
+ make_rose->facilities = facilities;
+
+ make_rose->neighbour->use++;
+
+ if (rose_sk(sk)->defer) {
+ make_rose->state = ROSE_STATE_5;
+ } else {
+ rose_write_internal(make, ROSE_CALL_ACCEPTED);
+ make_rose->state = ROSE_STATE_3;
+ rose_start_idletimer(make);
+ }
+
+ make_rose->condition = 0x00;
+ make_rose->vs = 0;
+ make_rose->va = 0;
+ make_rose->vr = 0;
+ make_rose->vl = 0;
+ sk->sk_ack_backlog++;
+
+ rose_insert_socket(make);
+
+ skb_queue_head(&sk->sk_receive_queue, skb);
+
+ rose_start_heartbeat(make);
+
+ if (!sock_flag(sk, SOCK_DEAD))
+ sk->sk_data_ready(sk);
+
+ return 1;
+}
+
+static int rose_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
+{
+ struct sock *sk = sock->sk;
+ struct rose_sock *rose = rose_sk(sk);
+ DECLARE_SOCKADDR(struct sockaddr_rose *, usrose, msg->msg_name);
+ int err;
+ struct full_sockaddr_rose srose;
+ struct sk_buff *skb;
+ unsigned char *asmptr;
+ int n, size, qbit = 0;
+
+ if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
+ return -EINVAL;
+
+ if (sock_flag(sk, SOCK_ZAPPED))
+ return -EADDRNOTAVAIL;
+
+ if (sk->sk_shutdown & SEND_SHUTDOWN) {
+ send_sig(SIGPIPE, current, 0);
+ return -EPIPE;
+ }
+
+ if (rose->neighbour == NULL || rose->device == NULL)
+ return -ENETUNREACH;
+
+ if (usrose != NULL) {
+ if (msg->msg_namelen != sizeof(struct sockaddr_rose) && msg->msg_namelen != sizeof(struct full_sockaddr_rose))
+ return -EINVAL;
+ memset(&srose, 0, sizeof(struct full_sockaddr_rose));
+ memcpy(&srose, usrose, msg->msg_namelen);
+ if (rosecmp(&rose->dest_addr, &srose.srose_addr) != 0 ||
+ ax25cmp(&rose->dest_call, &srose.srose_call) != 0)
+ return -EISCONN;
+ if (srose.srose_ndigis != rose->dest_ndigis)
+ return -EISCONN;
+ if (srose.srose_ndigis == rose->dest_ndigis) {
+ for (n = 0 ; n < srose.srose_ndigis ; n++)
+ if (ax25cmp(&rose->dest_digis[n],
+ &srose.srose_digis[n]))
+ return -EISCONN;
+ }
+ if (srose.srose_family != AF_ROSE)
+ return -EINVAL;
+ } else {
+ if (sk->sk_state != TCP_ESTABLISHED)
+ return -ENOTCONN;
+
+ srose.srose_family = AF_ROSE;
+ srose.srose_addr = rose->dest_addr;
+ srose.srose_call = rose->dest_call;
+ srose.srose_ndigis = rose->dest_ndigis;
+ for (n = 0 ; n < rose->dest_ndigis ; n++)
+ srose.srose_digis[n] = rose->dest_digis[n];
+ }
+
+ /* Build a packet */
+ /* Sanity check the packet size */
+ if (len > 65535)
+ return -EMSGSIZE;
+
+ size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN;
+
+ if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL)
+ return err;
+
+ skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN);
+
+ /*
+ * Put the data on the end
+ */
+
+ skb_reset_transport_header(skb);
+ skb_put(skb, len);
+
+ err = memcpy_from_msg(skb_transport_header(skb), msg, len);
+ if (err) {
+ kfree_skb(skb);
+ return err;
+ }
+
+ /*
+ * If the Q BIT Include socket option is in force, the first
+ * byte of the user data is the logical value of the Q Bit.
+ */
+ if (rose->qbitincl) {
+ qbit = skb->data[0];
+ skb_pull(skb, 1);
+ }
+
+ /*
+ * Push down the ROSE header
+ */
+ asmptr = skb_push(skb, ROSE_MIN_LEN);
+
+ /* Build a ROSE Network header */
+ asmptr[0] = ((rose->lci >> 8) & 0x0F) | ROSE_GFI;
+ asmptr[1] = (rose->lci >> 0) & 0xFF;
+ asmptr[2] = ROSE_DATA;
+
+ if (qbit)
+ asmptr[0] |= ROSE_Q_BIT;
+
+ if (sk->sk_state != TCP_ESTABLISHED) {
+ kfree_skb(skb);
+ return -ENOTCONN;
+ }
+
+#ifdef M_BIT
+#define ROSE_PACLEN (256-ROSE_MIN_LEN)
+ if (skb->len - ROSE_MIN_LEN > ROSE_PACLEN) {
+ unsigned char header[ROSE_MIN_LEN];
+ struct sk_buff *skbn;
+ int frontlen;
+ int lg;
+
+ /* Save a copy of the Header */
+ skb_copy_from_linear_data(skb, header, ROSE_MIN_LEN);
+ skb_pull(skb, ROSE_MIN_LEN);
+
+ frontlen = skb_headroom(skb);
+
+ while (skb->len > 0) {
+ if ((skbn = sock_alloc_send_skb(sk, frontlen + ROSE_PACLEN, 0, &err)) == NULL) {
+ kfree_skb(skb);
+ return err;
+ }
+
+ skbn->sk = sk;
+ skbn->free = 1;
+ skbn->arp = 1;
+
+ skb_reserve(skbn, frontlen);
+
+ lg = (ROSE_PACLEN > skb->len) ? skb->len : ROSE_PACLEN;
+
+ /* Copy the user data */
+ skb_copy_from_linear_data(skb, skb_put(skbn, lg), lg);
+ skb_pull(skb, lg);
+
+ /* Duplicate the Header */
+ skb_push(skbn, ROSE_MIN_LEN);
+ skb_copy_to_linear_data(skbn, header, ROSE_MIN_LEN);
+
+ if (skb->len > 0)
+ skbn->data[2] |= M_BIT;
+
+ skb_queue_tail(&sk->sk_write_queue, skbn); /* Throw it on the queue */
+ }
+
+ skb->free = 1;
+ kfree_skb(skb);
+ } else {
+ skb_queue_tail(&sk->sk_write_queue, skb); /* Throw it on the queue */
+ }
+#else
+ skb_queue_tail(&sk->sk_write_queue, skb); /* Shove it onto the queue */
+#endif
+
+ rose_kick(sk);
+
+ return len;
+}
+
+
+static int rose_recvmsg(struct socket *sock, struct msghdr *msg, size_t size,
+ int flags)
+{
+ struct sock *sk = sock->sk;
+ struct rose_sock *rose = rose_sk(sk);
+ size_t copied;
+ unsigned char *asmptr;
+ struct sk_buff *skb;
+ int n, er, qbit;
+
+ /*
+ * This works for seqpacket too. The receiver has ordered the queue for
+ * us! We do one quick check first though
+ */
+ if (sk->sk_state != TCP_ESTABLISHED)
+ return -ENOTCONN;
+
+ /* Now we can treat all alike */
+ if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL)
+ return er;
+
+ qbit = (skb->data[0] & ROSE_Q_BIT) == ROSE_Q_BIT;
+
+ skb_pull(skb, ROSE_MIN_LEN);
+
+ if (rose->qbitincl) {
+ asmptr = skb_push(skb, 1);
+ *asmptr = qbit;
+ }
+
+ skb_reset_transport_header(skb);
+ copied = skb->len;
+
+ if (copied > size) {
+ copied = size;
+ msg->msg_flags |= MSG_TRUNC;
+ }
+
+ skb_copy_datagram_msg(skb, 0, msg, copied);
+
+ if (msg->msg_name) {
+ struct sockaddr_rose *srose;
+ DECLARE_SOCKADDR(struct full_sockaddr_rose *, full_srose,
+ msg->msg_name);
+
+ memset(msg->msg_name, 0, sizeof(struct full_sockaddr_rose));
+ srose = msg->msg_name;
+ srose->srose_family = AF_ROSE;
+ srose->srose_addr = rose->dest_addr;
+ srose->srose_call = rose->dest_call;
+ srose->srose_ndigis = rose->dest_ndigis;
+ for (n = 0 ; n < rose->dest_ndigis ; n++)
+ full_srose->srose_digis[n] = rose->dest_digis[n];
+ msg->msg_namelen = sizeof(struct full_sockaddr_rose);
+ }
+
+ skb_free_datagram(sk, skb);
+
+ return copied;
+}
+
+
+static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
+{
+ struct sock *sk = sock->sk;
+ struct rose_sock *rose = rose_sk(sk);
+ void __user *argp = (void __user *)arg;
+
+ switch (cmd) {
+ case TIOCOUTQ: {
+ long amount;
+
+ amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk);
+ if (amount < 0)
+ amount = 0;
+ return put_user(amount, (unsigned int __user *) argp);
+ }
+
+ case TIOCINQ: {
+ struct sk_buff *skb;
+ long amount = 0L;
+ /* These two are safe on a single CPU system as only user tasks fiddle here */
+ if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL)
+ amount = skb->len;
+ return put_user(amount, (unsigned int __user *) argp);
+ }
+
+ case SIOCGSTAMP:
+ return sock_get_timestamp(sk, (struct timeval __user *) argp);
+
+ case SIOCGSTAMPNS:
+ return sock_get_timestampns(sk, (struct timespec __user *) argp);
+
+ case SIOCGIFADDR:
+ case SIOCSIFADDR:
+ case SIOCGIFDSTADDR:
+ case SIOCSIFDSTADDR:
+ case SIOCGIFBRDADDR:
+ case SIOCSIFBRDADDR:
+ case SIOCGIFNETMASK:
+ case SIOCSIFNETMASK:
+ case SIOCGIFMETRIC:
+ case SIOCSIFMETRIC:
+ return -EINVAL;
+
+ case SIOCADDRT:
+ case SIOCDELRT:
+ case SIOCRSCLRRT:
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+ return rose_rt_ioctl(cmd, argp);
+
+ case SIOCRSGCAUSE: {
+ struct rose_cause_struct rose_cause;
+ rose_cause.cause = rose->cause;
+ rose_cause.diagnostic = rose->diagnostic;
+ return copy_to_user(argp, &rose_cause, sizeof(struct rose_cause_struct)) ? -EFAULT : 0;
+ }
+
+ case SIOCRSSCAUSE: {
+ struct rose_cause_struct rose_cause;
+ if (copy_from_user(&rose_cause, argp, sizeof(struct rose_cause_struct)))
+ return -EFAULT;
+ rose->cause = rose_cause.cause;
+ rose->diagnostic = rose_cause.diagnostic;
+ return 0;
+ }
+
+ case SIOCRSSL2CALL:
+ if (!capable(CAP_NET_ADMIN)) return -EPERM;
+ if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
+ ax25_listen_release(&rose_callsign, NULL);
+ if (copy_from_user(&rose_callsign, argp, sizeof(ax25_address)))
+ return -EFAULT;
+ if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
+ return ax25_listen_register(&rose_callsign, NULL);
+
+ return 0;
+
+ case SIOCRSGL2CALL:
+ return copy_to_user(argp, &rose_callsign, sizeof(ax25_address)) ? -EFAULT : 0;
+
+ case SIOCRSACCEPT:
+ if (rose->state == ROSE_STATE_5) {
+ rose_write_internal(sk, ROSE_CALL_ACCEPTED);
+ rose_start_idletimer(sk);
+ rose->condition = 0x00;
+ rose->vs = 0;
+ rose->va = 0;
+ rose->vr = 0;
+ rose->vl = 0;
+ rose->state = ROSE_STATE_3;
+ }
+ return 0;
+
+ default:
+ return -ENOIOCTLCMD;
+ }
+
+ return 0;
+}
+
+#ifdef CONFIG_PROC_FS
+static void *rose_info_start(struct seq_file *seq, loff_t *pos)
+ __acquires(rose_list_lock)
+{
+ spin_lock_bh(&rose_list_lock);
+ return seq_hlist_start_head(&rose_list, *pos);
+}
+
+static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+ return seq_hlist_next(v, &rose_list, pos);
+}
+
+static void rose_info_stop(struct seq_file *seq, void *v)
+ __releases(rose_list_lock)
+{
+ spin_unlock_bh(&rose_list_lock);
+}
+
+static int rose_info_show(struct seq_file *seq, void *v)
+{
+ char buf[11], rsbuf[11];
+
+ if (v == SEQ_START_TOKEN)
+ seq_puts(seq,
+ "dest_addr dest_call src_addr src_call dev lci neigh st vs vr va t t1 t2 t3 hb idle Snd-Q Rcv-Q inode\n");
+
+ else {
+ struct sock *s = sk_entry(v);
+ struct rose_sock *rose = rose_sk(s);
+ const char *devname, *callsign;
+ const struct net_device *dev = rose->device;
+
+ if (!dev)
+ devname = "???";
+ else
+ devname = dev->name;
+
+ seq_printf(seq, "%-10s %-9s ",
+ rose2asc(rsbuf, &rose->dest_addr),
+ ax2asc(buf, &rose->dest_call));
+
+ if (ax25cmp(&rose->source_call, &null_ax25_address) == 0)
+ callsign = "??????-?";
+ else
+ callsign = ax2asc(buf, &rose->source_call);
+
+ seq_printf(seq,
+ "%-10s %-9s %-5s %3.3X %05d %d %d %d %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n",
+ rose2asc(rsbuf, &rose->source_addr),
+ callsign,
+ devname,
+ rose->lci & 0x0FFF,
+ (rose->neighbour) ? rose->neighbour->number : 0,
+ rose->state,
+ rose->vs,
+ rose->vr,
+ rose->va,
+ ax25_display_timer(&rose->timer) / HZ,
+ rose->t1 / HZ,
+ rose->t2 / HZ,
+ rose->t3 / HZ,
+ rose->hb / HZ,
+ ax25_display_timer(&rose->idletimer) / (60 * HZ),
+ rose->idle / (60 * HZ),
+ sk_wmem_alloc_get(s),
+ sk_rmem_alloc_get(s),
+ s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L);
+ }
+
+ return 0;
+}
+
+static const struct seq_operations rose_info_seqops = {
+ .start = rose_info_start,
+ .next = rose_info_next,
+ .stop = rose_info_stop,
+ .show = rose_info_show,
+};
+
+static int rose_info_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &rose_info_seqops);
+}
+
+static const struct file_operations rose_info_fops = {
+ .owner = THIS_MODULE,
+ .open = rose_info_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+#endif /* CONFIG_PROC_FS */
+
+static const struct net_proto_family rose_family_ops = {
+ .family = PF_ROSE,
+ .create = rose_create,
+ .owner = THIS_MODULE,
+};
+
+static const struct proto_ops rose_proto_ops = {
+ .family = PF_ROSE,
+ .owner = THIS_MODULE,
+ .release = rose_release,
+ .bind = rose_bind,
+ .connect = rose_connect,
+ .socketpair = sock_no_socketpair,
+ .accept = rose_accept,
+ .getname = rose_getname,
+ .poll = datagram_poll,
+ .ioctl = rose_ioctl,
+ .listen = rose_listen,
+ .shutdown = sock_no_shutdown,
+ .setsockopt = rose_setsockopt,
+ .getsockopt = rose_getsockopt,
+ .sendmsg = rose_sendmsg,
+ .recvmsg = rose_recvmsg,
+ .mmap = sock_no_mmap,
+ .sendpage = sock_no_sendpage,
+};
+
+static struct notifier_block rose_dev_notifier = {
+ .notifier_call = rose_device_event,
+};
+
+static struct net_device **dev_rose;
+
+static struct ax25_protocol rose_pid = {
+ .pid = AX25_P_ROSE,
+ .func = rose_route_frame
+};
+
+static struct ax25_linkfail rose_linkfail_notifier = {
+ .func = rose_link_failed
+};
+
+static int __init rose_proto_init(void)
+{
+ int i;
+ int rc;
+
+ if (rose_ndevs > 0x7FFFFFFF/sizeof(struct net_device *)) {
+ printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter to large\n");
+ rc = -EINVAL;
+ goto out;
+ }
+
+ rc = proto_register(&rose_proto, 0);
+ if (rc != 0)
+ goto out;
+
+ rose_callsign = null_ax25_address;
+
+ dev_rose = kzalloc(rose_ndevs * sizeof(struct net_device *), GFP_KERNEL);
+ if (dev_rose == NULL) {
+ printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n");
+ rc = -ENOMEM;
+ goto out_proto_unregister;
+ }
+
+ for (i = 0; i < rose_ndevs; i++) {
+ struct net_device *dev;
+ char name[IFNAMSIZ];
+
+ sprintf(name, "rose%d", i);
+ dev = alloc_netdev(0, name, NET_NAME_UNKNOWN, rose_setup);
+ if (!dev) {
+ printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate memory\n");
+ rc = -ENOMEM;
+ goto fail;
+ }
+ rc = register_netdev(dev);
+ if (rc) {
+ printk(KERN_ERR "ROSE: netdevice registration failed\n");
+ free_netdev(dev);
+ goto fail;
+ }
+ rose_set_lockdep_key(dev);
+ dev_rose[i] = dev;
+ }
+
+ sock_register(&rose_family_ops);
+ register_netdevice_notifier(&rose_dev_notifier);
+
+ ax25_register_pid(&rose_pid);
+ ax25_linkfail_register(&rose_linkfail_notifier);
+
+#ifdef CONFIG_SYSCTL
+ rose_register_sysctl();
+#endif
+ rose_loopback_init();
+
+ rose_add_loopback_neigh();
+
+ proc_create("rose", S_IRUGO, init_net.proc_net, &rose_info_fops);
+ proc_create("rose_neigh", S_IRUGO, init_net.proc_net,
+ &rose_neigh_fops);
+ proc_create("rose_nodes", S_IRUGO, init_net.proc_net,
+ &rose_nodes_fops);
+ proc_create("rose_routes", S_IRUGO, init_net.proc_net,
+ &rose_routes_fops);
+out:
+ return rc;
+fail:
+ while (--i >= 0) {
+ unregister_netdev(dev_rose[i]);
+ free_netdev(dev_rose[i]);
+ }
+ kfree(dev_rose);
+out_proto_unregister:
+ proto_unregister(&rose_proto);
+ goto out;
+}
+module_init(rose_proto_init);
+
+module_param(rose_ndevs, int, 0);
+MODULE_PARM_DESC(rose_ndevs, "number of ROSE devices");
+
+MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>");
+MODULE_DESCRIPTION("The amateur radio ROSE network layer protocol");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_NETPROTO(PF_ROSE);
+
+static void __exit rose_exit(void)
+{
+ int i;
+
+ remove_proc_entry("rose", init_net.proc_net);
+ remove_proc_entry("rose_neigh", init_net.proc_net);
+ remove_proc_entry("rose_nodes", init_net.proc_net);
+ remove_proc_entry("rose_routes", init_net.proc_net);
+ rose_loopback_clear();
+
+ rose_rt_free();
+
+ ax25_protocol_release(AX25_P_ROSE);
+ ax25_linkfail_release(&rose_linkfail_notifier);
+
+ if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
+ ax25_listen_release(&rose_callsign, NULL);
+
+#ifdef CONFIG_SYSCTL
+ rose_unregister_sysctl();
+#endif
+ unregister_netdevice_notifier(&rose_dev_notifier);
+
+ sock_unregister(PF_ROSE);
+
+ for (i = 0; i < rose_ndevs; i++) {
+ struct net_device *dev = dev_rose[i];
+
+ if (dev) {
+ unregister_netdev(dev);
+ free_netdev(dev);
+ }
+ }
+
+ kfree(dev_rose);
+ proto_unregister(&rose_proto);
+}
+
+module_exit(rose_exit);
Code Review / kvmfornfv.git / blobdiff