#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>
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;
+
/*
* Convert a ROSE address into text.
*/
{
struct net_device *dev = (struct net_device *)ptr;
+ if (dev->nd_net != &init_net)
+ return NOTIFY_DONE;
+
if (event != NETDEV_DOWN)
return NOTIFY_DONE;
.obj_size = sizeof(struct rose_sock),
};
-static int rose_create(struct socket *sock, int protocol)
+static int rose_create(struct net *net, struct socket *sock, int protocol)
{
struct sock *sk;
struct rose_sock *rose;
+ if (net != &init_net)
+ return -EAFNOSUPPORT;
+
if (sock->type != SOCK_SEQPACKET || protocol != 0)
return -ESOCKTNOSUPPORT;
- if ((sk = sk_alloc(PF_ROSE, GFP_ATOMIC, &rose_proto, 1)) == NULL)
+ sk = sk_alloc(net, PF_ROSE, GFP_ATOMIC, &rose_proto);
+ if (sk == NULL)
return -ENOMEM;
rose = rose_sk(sk);
if (osk->sk_type != SOCK_SEQPACKET)
return NULL;
- if ((sk = sk_alloc(PF_ROSE, GFP_ATOMIC, &rose_proto, 1)) == NULL)
+ sk = sk_alloc(osk->sk_net, PF_ROSE, GFP_ATOMIC, &rose_proto);
+ if (sk == NULL)
return NULL;
rose = rose_sk(sk);
unsigned char cause, diagnostic;
struct net_device *dev;
ax25_uid_assoc *user;
- int n;
-
- if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) {
- sock->state = SS_CONNECTED;
- return 0; /* Connect completed during a ERESTARTSYS event */
- }
-
- if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) {
- sock->state = SS_UNCONNECTED;
- return -ECONNREFUSED;
- }
-
- if (sk->sk_state == TCP_ESTABLISHED)
- return -EISCONN; /* No reconnect on a seqpacket socket */
-
- sk->sk_state = TCP_CLOSE;
- sock->state = SS_UNCONNECTED;
+ int n, err = 0;
if (addr_len != sizeof(struct sockaddr_rose) && addr_len != sizeof(struct full_sockaddr_rose))
return -EINVAL;
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);
if (!rose->neighbour)
return -ENETUNREACH;
rose->lci = rose_new_lci(rose->neighbour);
- if (!rose->lci)
- return -ENETUNREACH;
+ 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)
- return -ENETUNREACH;
+ if ((dev = rose_dev_first()) == NULL) {
+ err = -ENETUNREACH;
+ goto out_release;
+ }
user = ax25_findbyuid(current->euid);
- if (!user)
- return -EINVAL;
+ if (!user) {
+ err = -EINVAL;
+ goto out_release;
+ }
memcpy(&rose->source_addr, dev->dev_addr, ROSE_ADDR_LEN);
rose->source_call = user->call;
rose_start_t1timer(sk);
/* Now the loop */
- if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK))
- return -EINPROGRESS;
+ 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) {
- struct task_struct *tsk = current;
- DECLARE_WAITQUEUE(wait, tsk);
+ DEFINE_WAIT(wait);
- add_wait_queue(sk->sk_sleep, &wait);
for (;;) {
- set_current_state(TASK_INTERRUPTIBLE);
+ prepare_to_wait(sk->sk_sleep, &wait,
+ TASK_INTERRUPTIBLE);
if (sk->sk_state != TCP_SYN_SENT)
break;
- if (!signal_pending(tsk)) {
+ if (!signal_pending(current)) {
+ release_sock(sk);
schedule();
+ lock_sock(sk);
continue;
}
- current->state = TASK_RUNNING;
- remove_wait_queue(sk->sk_sleep, &wait);
- return -ERESTARTSYS;
+ err = -ERESTARTSYS;
+ break;
}
- current->state = TASK_RUNNING;
- remove_wait_queue(sk->sk_sleep, &wait);
+ finish_wait(sk->sk_sleep, &wait);
+
+ if (err)
+ goto out_release;
}
if (sk->sk_state != TCP_ESTABLISHED) {
rose->neighbour = rose_get_neigh(&addr->srose_addr, &cause, &diagnostic);
if (rose->neighbour)
goto rose_try_next_neigh;
- /* No more neighbour */
+
+ /* No more neighbours */
sock->state = SS_UNCONNECTED;
- return sock_error(sk); /* Always set at this point */
+ err = sock_error(sk); /* Always set at this point */
+ goto out_release;
}
sock->state = SS_CONNECTED;
- return 0;
+out_release:
+ release_sock(sk);
+
+ return err;
}
static int rose_accept(struct socket *sock, struct socket *newsock, int flags)
{
- struct task_struct *tsk = current;
- DECLARE_WAITQUEUE(wait, tsk);
struct sk_buff *skb;
struct sock *newsk;
+ DEFINE_WAIT(wait);
struct sock *sk;
int err = 0;
lock_sock(sk);
if (sk->sk_type != SOCK_SEQPACKET) {
err = -EOPNOTSUPP;
- goto out;
+ goto out_release;
}
if (sk->sk_state != TCP_LISTEN) {
err = -EINVAL;
- goto out;
+ goto out_release;
}
/*
* The write queue this time is holding sockets ready to use
* hooked into the SABM we saved
*/
- add_wait_queue(sk->sk_sleep, &wait);
for (;;) {
+ prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
+
skb = skb_dequeue(&sk->sk_receive_queue);
if (skb)
break;
- current->state = TASK_INTERRUPTIBLE;
- release_sock(sk);
if (flags & O_NONBLOCK) {
- current->state = TASK_RUNNING;
- remove_wait_queue(sk->sk_sleep, &wait);
- return -EWOULDBLOCK;
+ err = -EWOULDBLOCK;
+ break;
}
- if (!signal_pending(tsk)) {
+ if (!signal_pending(current)) {
+ release_sock(sk);
schedule();
lock_sock(sk);
continue;
}
- return -ERESTARTSYS;
+ err = -ERESTARTSYS;
+ break;
}
- current->state = TASK_RUNNING;
- remove_wait_queue(sk->sk_sleep, &wait);
+ finish_wait(sk->sk_sleep, &wait);
+ if (err)
+ goto out_release;
newsk = skb->sk;
newsk->sk_socket = newsock;
sk->sk_ack_backlog--;
newsock->sk = newsk;
-out:
+out_release:
release_sock(sk);
return err;
*/
SOCK_DEBUG(sk, "ROSE: Appending user data\n");
- asmptr = skb->h.raw = skb_put(skb, len);
+ skb_reset_transport_header(skb);
+ skb_put(skb, len);
- err = memcpy_fromiovec(asmptr, msg->msg_iov, len);
+ err = memcpy_fromiovec(skb_transport_header(skb), msg->msg_iov, len);
if (err) {
kfree_skb(skb);
return err;
int lg;
/* Save a copy of the Header */
- memcpy(header, skb->data, ROSE_MIN_LEN);
+ skb_copy_from_linear_data(skb, header, ROSE_MIN_LEN);
skb_pull(skb, ROSE_MIN_LEN);
frontlen = skb_headroom(skb);
lg = (ROSE_PACLEN > skb->len) ? skb->len : ROSE_PACLEN;
/* Copy the user data */
- memcpy(skb_put(skbn, lg), skb->data, lg);
+ skb_copy_from_linear_data(skb, skb_put(skbn, lg), lg);
skb_pull(skb, lg);
/* Duplicate the Header */
skb_push(skbn, ROSE_MIN_LEN);
- memcpy(skbn->data, header, ROSE_MIN_LEN);
+ skb_copy_to_linear_data(skbn, header, ROSE_MIN_LEN);
if (skb->len > 0)
skbn->data[2] |= M_BIT;
*asmptr = qbit;
}
- skb->h.raw = skb->data;
+ skb_reset_transport_header(skb);
copied = skb->len;
if (copied > size) {
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:
if (copy_from_user(&rose_callsign, argp, sizeof(ax25_address)))
return -EFAULT;
if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
- ax25_listen_register(&rose_callsign, NULL);
+ return ax25_listen_register(&rose_callsign, NULL);
+
return 0;
case SIOCRSGL2CALL:
spin_lock_bh(&rose_list_lock);
if (*pos == 0)
return SEQ_START_TOKEN;
-
+
i = 1;
sk_for_each(s, node, &rose_list) {
if (i == *pos)
{
++*pos;
- return (v == SEQ_START_TOKEN) ? sk_head(&rose_list)
+ return (v == SEQ_START_TOKEN) ? sk_head(&rose_list)
: sk_next((struct sock *)v);
}
-
+
static void rose_info_stop(struct seq_file *seq, void *v)
{
spin_unlock_bh(&rose_list_lock);
char buf[11];
if (v == SEQ_START_TOKEN)
- seq_puts(seq,
+ 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 {
devname = "???";
else
devname = dev->name;
-
+
seq_printf(seq, "%-10s %-9s ",
rose2asc(&rose->dest_addr),
ax2asc(buf, &rose->dest_call));
return 0;
}
-static struct seq_operations rose_info_seqops = {
+static const struct seq_operations rose_info_seqops = {
.start = rose_info_start,
.next = rose_info_next,
.stop = rose_info_stop,
return seq_open(file, &rose_info_seqops);
}
-static struct file_operations rose_info_fops = {
+static const struct file_operations rose_info_fops = {
.owner = THIS_MODULE,
.open = rose_info_open,
.read = seq_read,
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;
char name[IFNAMSIZ];
sprintf(name, "rose%d", i);
- dev = alloc_netdev(sizeof(struct net_device_stats),
+ dev = alloc_netdev(sizeof(struct net_device_stats),
name, rose_setup);
if (!dev) {
printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate memory\n");
free_netdev(dev);
goto fail;
}
+ lockdep_set_class(&dev->_xmit_lock, &rose_netdev_xmit_lock_key);
dev_rose[i] = dev;
}
sock_register(&rose_family_ops);
register_netdevice_notifier(&rose_dev_notifier);
- ax25_protocol_register(AX25_P_ROSE, rose_route_frame);
- ax25_linkfail_register(rose_link_failed);
+ ax25_register_pid(&rose_pid);
+ ax25_linkfail_register(&rose_linkfail_notifier);
#ifdef CONFIG_SYSCTL
rose_register_sysctl();
rose_add_loopback_neigh();
- proc_net_fops_create("rose", S_IRUGO, &rose_info_fops);
- proc_net_fops_create("rose_neigh", S_IRUGO, &rose_neigh_fops);
- proc_net_fops_create("rose_nodes", S_IRUGO, &rose_nodes_fops);
- proc_net_fops_create("rose_routes", S_IRUGO, &rose_routes_fops);
+ proc_net_fops_create(&init_net, "rose", S_IRUGO, &rose_info_fops);
+ proc_net_fops_create(&init_net, "rose_neigh", S_IRUGO, &rose_neigh_fops);
+ proc_net_fops_create(&init_net, "rose_nodes", S_IRUGO, &rose_nodes_fops);
+ proc_net_fops_create(&init_net, "rose_routes", S_IRUGO, &rose_routes_fops);
out:
return rc;
fail:
{
int i;
- proc_net_remove("rose");
- proc_net_remove("rose_neigh");
- proc_net_remove("rose_nodes");
- proc_net_remove("rose_routes");
+ proc_net_remove(&init_net, "rose");
+ proc_net_remove(&init_net, "rose_neigh");
+ proc_net_remove(&init_net, "rose_nodes");
+ proc_net_remove(&init_net, "rose_routes");
rose_loopback_clear();
rose_rt_free();
ax25_protocol_release(AX25_P_ROSE);
- ax25_linkfail_release(rose_link_failed);
+ ax25_linkfail_release(&rose_linkfail_notifier);
if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
ax25_listen_release(&rose_callsign, NULL);
projects / linux-2.6 / blobdiff