* Copyright (C) Hans Alblas PE1AYX (hans@esrac.ele.tue.nl)
* Copyright (C) Frederic Rible F1OAT (frible@teaser.fr)
*/
-#include <linux/config.h>
+#include <linux/capability.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/timer.h>
#include <linux/string.h>
-#include <linux/smp_lock.h>
#include <linux/sockios.h>
#include <linux/net.h>
#include <net/ax25.h>
#include <linux/sysctl.h>
#include <linux/init.h>
#include <linux/spinlock.h>
-#include <net/tcp.h>
+#include <net/net_namespace.h>
+#include <net/tcp_states.h>
#include <net/ip.h>
#include <net/arp.h>
HLIST_HEAD(ax25_list);
DEFINE_SPINLOCK(ax25_list_lock);
-static struct proto_ops ax25_proto_ops;
+static const struct proto_ops ax25_proto_ops;
static void ax25_free_sock(struct sock *sk)
{
return;
spin_lock_bh(&ax25_list_lock);
+again:
ax25_for_each(s, node, &ax25_list) {
if (s->ax25_dev == ax25_dev) {
s->ax25_dev = NULL;
+ spin_unlock_bh(&ax25_list_lock);
ax25_disconnect(s, ENETUNREACH);
+ spin_lock_bh(&ax25_list_lock);
+
+ /* The entry could have been deleted from the
+ * list meanwhile and thus the next pointer is
+ * no longer valid. Play it safe and restart
+ * the scan. Forward progress is ensured
+ * because we set s->ax25_dev to NULL and we
+ * are never passed a NULL 'dev' argument.
+ */
+ goto again;
}
}
spin_unlock_bh(&ax25_list_lock);
{
struct net_device *dev = (struct net_device *)ptr;
+ if (!net_eq(dev_net(dev), &init_net))
+ return NOTIFY_DONE;
+
/* Reject non AX.25 devices */
if (dev->type != ARPHRD_AX25)
return NOTIFY_DONE;
ax25_cb *s;
struct hlist_node *node;
- spin_lock_bh(&ax25_list_lock);
+ spin_lock(&ax25_list_lock);
ax25_for_each(s, node, &ax25_list) {
if ((s->iamdigi && !digi) || (!s->iamdigi && digi))
continue;
/* If device is null we match any device */
if (s->ax25_dev == NULL || s->ax25_dev->dev == dev) {
sock_hold(s->sk);
- spin_unlock_bh(&ax25_list_lock);
+ spin_unlock(&ax25_list_lock);
return s->sk;
}
}
}
- spin_unlock_bh(&ax25_list_lock);
+ spin_unlock(&ax25_list_lock);
return NULL;
}
ax25_cb *s;
struct hlist_node *node;
- spin_lock_bh(&ax25_list_lock);
+ spin_lock(&ax25_list_lock);
ax25_for_each(s, node, &ax25_list) {
if (s->sk && !ax25cmp(&s->source_addr, my_addr) &&
!ax25cmp(&s->dest_addr, dest_addr) &&
}
}
- spin_unlock_bh(&ax25_list_lock);
+ spin_unlock(&ax25_list_lock);
return sk;
}
return NULL;
}
+EXPORT_SYMBOL(ax25_find_cb);
+
void ax25_send_to_raw(ax25_address *addr, struct sk_buff *skb, int proto)
{
ax25_cb *s;
struct sk_buff *copy;
struct hlist_node *node;
- spin_lock_bh(&ax25_list_lock);
+ spin_lock(&ax25_list_lock);
ax25_for_each(s, node, &ax25_list) {
if (s->sk != NULL && ax25cmp(&s->source_addr, addr) == 0 &&
s->sk->sk_type == SOCK_RAW &&
kfree_skb(copy);
}
}
- spin_unlock_bh(&ax25_list_lock);
+ spin_unlock(&ax25_list_lock);
}
/*
{
ax25_cb *ax25=(ax25_cb *)data;
struct sock *sk;
-
+
sk=ax25->sk;
-
+
bh_lock_sock(sk);
sock_hold(sk);
ax25_destroy_socket(ax25);
/* Queue the unaccepted socket for death */
sock_orphan(skb->sk);
+ /* 9A4GL: hack to release unaccepted sockets */
+ skb->sk->sk_state = TCP_LISTEN;
+
ax25_start_heartbeat(sax25);
sax25->state = AX25_STATE_0;
}
if (atomic_read(&ax25->sk->sk_wmem_alloc) ||
atomic_read(&ax25->sk->sk_rmem_alloc)) {
/* Defer: outstanding buffers */
- init_timer(&ax25->dtimer);
+ setup_timer(&ax25->dtimer, ax25_destroy_timer,
+ (unsigned long)ax25);
ax25->dtimer.expires = jiffies + 2 * HZ;
- ax25->dtimer.function = ax25_destroy_timer;
- ax25->dtimer.data = (unsigned long)ax25;
add_timer(&ax25->dtimer);
} else {
struct sock *sk=ax25->sk;
ax25_disconnect(ax25, ENETRESET);
break;
- case AX25_WINDOW:
- if (ax25->modulus == AX25_MODULUS) {
- if (ax25_ctl.arg < 1 || ax25_ctl.arg > 7)
- return -EINVAL;
- } else {
- if (ax25_ctl.arg < 1 || ax25_ctl.arg > 63)
- return -EINVAL;
- }
- ax25->window = ax25_ctl.arg;
- break;
-
- case AX25_T1:
+ case AX25_WINDOW:
+ if (ax25->modulus == AX25_MODULUS) {
+ if (ax25_ctl.arg < 1 || ax25_ctl.arg > 7)
+ return -EINVAL;
+ } else {
+ if (ax25_ctl.arg < 1 || ax25_ctl.arg > 63)
+ return -EINVAL;
+ }
+ ax25->window = ax25_ctl.arg;
+ break;
+
+ case AX25_T1:
if (ax25_ctl.arg < 1)
- return -EINVAL;
- ax25->rtt = (ax25_ctl.arg * HZ) / 2;
- ax25->t1 = ax25_ctl.arg * HZ;
- break;
-
- case AX25_T2:
- if (ax25_ctl.arg < 1)
- return -EINVAL;
- ax25->t2 = ax25_ctl.arg * HZ;
- break;
-
- case AX25_N2:
- if (ax25_ctl.arg < 1 || ax25_ctl.arg > 31)
return -EINVAL;
- ax25->n2count = 0;
- ax25->n2 = ax25_ctl.arg;
- break;
-
- case AX25_T3:
- if (ax25_ctl.arg < 0)
- return -EINVAL;
- ax25->t3 = ax25_ctl.arg * HZ;
- break;
-
- case AX25_IDLE:
- if (ax25_ctl.arg < 0)
- return -EINVAL;
- ax25->idle = ax25_ctl.arg * 60 * HZ;
- break;
-
- case AX25_PACLEN:
- if (ax25_ctl.arg < 16 || ax25_ctl.arg > 65535)
- return -EINVAL;
- ax25->paclen = ax25_ctl.arg;
- break;
-
- default:
- return -EINVAL;
+ ax25->rtt = (ax25_ctl.arg * HZ) / 2;
+ ax25->t1 = ax25_ctl.arg * HZ;
+ break;
+
+ case AX25_T2:
+ if (ax25_ctl.arg < 1)
+ return -EINVAL;
+ ax25->t2 = ax25_ctl.arg * HZ;
+ break;
+
+ case AX25_N2:
+ if (ax25_ctl.arg < 1 || ax25_ctl.arg > 31)
+ return -EINVAL;
+ ax25->n2count = 0;
+ ax25->n2 = ax25_ctl.arg;
+ break;
+
+ case AX25_T3:
+ if (ax25_ctl.arg < 0)
+ return -EINVAL;
+ ax25->t3 = ax25_ctl.arg * HZ;
+ break;
+
+ case AX25_IDLE:
+ if (ax25_ctl.arg < 0)
+ return -EINVAL;
+ ax25->idle = ax25_ctl.arg * 60 * HZ;
+ break;
+
+ case AX25_PACLEN:
+ if (ax25_ctl.arg < 16 || ax25_ctl.arg > 65535)
+ return -EINVAL;
+ ax25->paclen = ax25_ctl.arg;
+ break;
+
+ default:
+ return -EINVAL;
}
return 0;
}
+static void ax25_fillin_cb_from_dev(ax25_cb *ax25, ax25_dev *ax25_dev)
+{
+ ax25->rtt = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_T1]) / 2;
+ ax25->t1 = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_T1]);
+ ax25->t2 = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_T2]);
+ ax25->t3 = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_T3]);
+ ax25->n2 = ax25_dev->values[AX25_VALUES_N2];
+ ax25->paclen = ax25_dev->values[AX25_VALUES_PACLEN];
+ ax25->idle = msecs_to_jiffies(ax25_dev->values[AX25_VALUES_IDLE]);
+ ax25->backoff = ax25_dev->values[AX25_VALUES_BACKOFF];
+
+ if (ax25_dev->values[AX25_VALUES_AXDEFMODE]) {
+ ax25->modulus = AX25_EMODULUS;
+ ax25->window = ax25_dev->values[AX25_VALUES_EWINDOW];
+ } else {
+ ax25->modulus = AX25_MODULUS;
+ ax25->window = ax25_dev->values[AX25_VALUES_WINDOW];
+ }
+}
+
/*
* Fill in a created AX.25 created control block with the default
* values for a particular device.
ax25->ax25_dev = ax25_dev;
if (ax25->ax25_dev != NULL) {
- ax25->rtt = ax25_dev->values[AX25_VALUES_T1] / 2;
- ax25->t1 = ax25_dev->values[AX25_VALUES_T1];
- ax25->t2 = ax25_dev->values[AX25_VALUES_T2];
- ax25->t3 = ax25_dev->values[AX25_VALUES_T3];
- ax25->n2 = ax25_dev->values[AX25_VALUES_N2];
- ax25->paclen = ax25_dev->values[AX25_VALUES_PACLEN];
- ax25->idle = ax25_dev->values[AX25_VALUES_IDLE];
- ax25->backoff = ax25_dev->values[AX25_VALUES_BACKOFF];
-
- if (ax25_dev->values[AX25_VALUES_AXDEFMODE]) {
- ax25->modulus = AX25_EMODULUS;
- ax25->window = ax25_dev->values[AX25_VALUES_EWINDOW];
- } else {
- ax25->modulus = AX25_MODULUS;
- ax25->window = ax25_dev->values[AX25_VALUES_WINDOW];
- }
+ ax25_fillin_cb_from_dev(ax25, ax25_dev);
+ return;
+ }
+
+ /*
+ * No device, use kernel / AX.25 spec default values
+ */
+ ax25->rtt = msecs_to_jiffies(AX25_DEF_T1) / 2;
+ ax25->t1 = msecs_to_jiffies(AX25_DEF_T1);
+ ax25->t2 = msecs_to_jiffies(AX25_DEF_T2);
+ ax25->t3 = msecs_to_jiffies(AX25_DEF_T3);
+ ax25->n2 = AX25_DEF_N2;
+ ax25->paclen = AX25_DEF_PACLEN;
+ ax25->idle = msecs_to_jiffies(AX25_DEF_IDLE);
+ ax25->backoff = AX25_DEF_BACKOFF;
+
+ if (AX25_DEF_AXDEFMODE) {
+ ax25->modulus = AX25_EMODULUS;
+ ax25->window = AX25_DEF_EWINDOW;
} else {
- ax25->rtt = AX25_DEF_T1 / 2;
- ax25->t1 = AX25_DEF_T1;
- ax25->t2 = AX25_DEF_T2;
- ax25->t3 = AX25_DEF_T3;
- ax25->n2 = AX25_DEF_N2;
- ax25->paclen = AX25_DEF_PACLEN;
- ax25->idle = AX25_DEF_IDLE;
- ax25->backoff = AX25_DEF_BACKOFF;
-
- if (AX25_DEF_AXDEFMODE) {
- ax25->modulus = AX25_EMODULUS;
- ax25->window = AX25_DEF_EWINDOW;
- } else {
- ax25->modulus = AX25_MODULUS;
- ax25->window = AX25_DEF_WINDOW;
- }
+ ax25->modulus = AX25_MODULUS;
+ ax25->window = AX25_DEF_WINDOW;
}
}
{
ax25_cb *ax25;
- if ((ax25 = kmalloc(sizeof(*ax25), GFP_ATOMIC)) == NULL)
+ if ((ax25 = kzalloc(sizeof(*ax25), GFP_ATOMIC)) == NULL)
return NULL;
- memset(ax25, 0x00, sizeof(*ax25));
atomic_set(&ax25->refcount, 1);
skb_queue_head_init(&ax25->write_queue);
skb_queue_head_init(&ax25->ack_queue);
skb_queue_head_init(&ax25->reseq_queue);
- init_timer(&ax25->timer);
- init_timer(&ax25->t1timer);
- init_timer(&ax25->t2timer);
- init_timer(&ax25->t3timer);
- init_timer(&ax25->idletimer);
+ ax25_setup_timers(ax25);
ax25_fillin_cb(ax25, NULL);
res = -EINVAL;
break;
}
- ax25->rtt = (opt * HZ) / 2;
+ ax25->rtt = (opt * HZ) >> 1;
ax25->t1 = opt * HZ;
break;
break;
}
- dev = dev_get_by_name(devname);
+ dev = dev_get_by_name(&init_net, devname);
if (dev == NULL) {
res = -ENODEV;
break;
.obj_size = sizeof(struct sock),
};
-static int ax25_create(struct socket *sock, int protocol)
+static int ax25_create(struct net *net, struct socket *sock, int protocol)
{
struct sock *sk;
ax25_cb *ax25;
+ if (net != &init_net)
+ return -EAFNOSUPPORT;
+
switch (sock->type) {
case SOCK_DGRAM:
if (protocol == 0 || protocol == PF_AX25)
return -ESOCKTNOSUPPORT;
}
- if ((sk = sk_alloc(PF_AX25, GFP_ATOMIC, &ax25_proto, 1)) == NULL)
+ sk = sk_alloc(net, PF_AX25, GFP_ATOMIC, &ax25_proto);
+ if (sk == NULL)
return -ENOMEM;
ax25 = sk->sk_protinfo = ax25_create_cb();
struct sock *sk;
ax25_cb *ax25, *oax25;
- if ((sk = sk_alloc(PF_AX25, GFP_ATOMIC, osk->sk_prot, 1)) == NULL)
+ sk = sk_alloc(sock_net(osk), PF_AX25, GFP_ATOMIC, osk->sk_prot);
+ if (sk == NULL)
return NULL;
if ((ax25 = ax25_create_cb()) == NULL) {
sk->sk_destruct = ax25_free_sock;
sk->sk_type = osk->sk_type;
- sk->sk_socket = osk->sk_socket;
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;
- sk->sk_sleep = osk->sk_sleep;
sock_copy_flags(sk, osk);
oax25 = ax25_sk(osk);
ax25->source_addr = oax25->source_addr;
if (oax25->digipeat != NULL) {
- if ((ax25->digipeat = kmalloc(sizeof(ax25_digi), GFP_ATOMIC)) == NULL) {
+ ax25->digipeat = kmemdup(oax25->digipeat, sizeof(ax25_digi),
+ GFP_ATOMIC);
+ if (ax25->digipeat == NULL) {
sk_free(sk);
ax25_cb_put(ax25);
return NULL;
}
-
- memcpy(ax25->digipeat, oax25->digipeat, sizeof(ax25_digi));
}
sk->sk_protinfo = ax25;
int err = 0;
if (addr_len != sizeof(struct sockaddr_ax25) &&
- addr_len != sizeof(struct full_sockaddr_ax25)) {
- /* support for old structure may go away some time */
+ addr_len != sizeof(struct full_sockaddr_ax25))
+ /* support for old structure may go away some time
+ * ax25_bind(): uses old (6 digipeater) socket structure.
+ */
if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
- (addr_len > sizeof(struct full_sockaddr_ax25))) {
+ (addr_len > sizeof(struct full_sockaddr_ax25)))
return -EINVAL;
- }
-
- printk(KERN_WARNING "ax25_bind(): %s uses old (6 digipeater) socket structure.\n",
- current->comm);
- }
if (addr->fsa_ax25.sax25_family != AF_AX25)
return -EINVAL;
- user = ax25_findbyuid(current->euid);
+ user = ax25_findbyuid(current_euid());
if (user) {
call = user->call;
ax25_uid_put(user);
/*
* FIXME: nonblock behaviour looks like it may have a bug.
*/
-static int ax25_connect(struct socket *sock, struct sockaddr *uaddr,
- int addr_len, int flags)
+static int __must_check ax25_connect(struct socket *sock,
+ struct sockaddr *uaddr, int addr_len, int flags)
{
struct sock *sk = sock->sk;
ax25_cb *ax25 = ax25_sk(sk), *ax25t;
* some sanity checks. code further down depends on this
*/
- if (addr_len == sizeof(struct sockaddr_ax25)) {
- /* support for this will go away in early 2.5.x */
- printk(KERN_WARNING "ax25_connect(): %s uses obsolete socket structure\n",
- current->comm);
- }
- else if (addr_len != sizeof(struct full_sockaddr_ax25)) {
- /* support for old structure may go away some time */
+ if (addr_len == sizeof(struct sockaddr_ax25))
+ /* support for this will go away in early 2.5.x
+ * ax25_connect(): uses obsolete socket structure
+ */
+ ;
+ else if (addr_len != sizeof(struct full_sockaddr_ax25))
+ /* support for old structure may go away some time
+ * ax25_connect(): uses old (6 digipeater) socket structure.
+ */
if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
- (addr_len > sizeof(struct full_sockaddr_ax25))) {
+ (addr_len > sizeof(struct full_sockaddr_ax25)))
return -EINVAL;
- }
- printk(KERN_WARNING "ax25_connect(): %s uses old (6 digipeater) socket structure.\n",
- current->comm);
- }
if (fsa->fsa_ax25.sax25_family != AF_AX25)
return -EINVAL;
switch (sk->sk_state) {
case TCP_SYN_SENT: /* still trying */
err = -EINPROGRESS;
- goto out;
+ goto out_release;
case TCP_ESTABLISHED: /* connection established */
sock->state = SS_CONNECTED;
- goto out;
+ goto out_release;
case TCP_CLOSE: /* connection refused */
sock->state = SS_UNCONNECTED;
err = -ECONNREFUSED;
- goto out;
+ goto out_release;
}
}
if (sk->sk_state == TCP_ESTABLISHED && sk->sk_type == SOCK_SEQPACKET) {
err = -EISCONN; /* No reconnect on a seqpacket socket */
- goto out;
+ goto out_release;
}
sk->sk_state = TCP_CLOSE;
sock->state = SS_UNCONNECTED;
- if (ax25->digipeat != NULL) {
- kfree(ax25->digipeat);
- ax25->digipeat = NULL;
- }
+ kfree(ax25->digipeat);
+ ax25->digipeat = NULL;
/*
* Handle digi-peaters to be used.
/* Valid number of digipeaters ? */
if (fsa->fsa_ax25.sax25_ndigis < 1 || fsa->fsa_ax25.sax25_ndigis > AX25_MAX_DIGIS) {
err = -EINVAL;
- goto out;
+ goto out_release;
}
if ((digi = kmalloc(sizeof(ax25_digi), GFP_KERNEL)) == NULL) {
err = -ENOBUFS;
- goto out;
+ goto out_release;
}
digi->ndigi = fsa->fsa_ax25.sax25_ndigis;
current->comm);
if ((err = ax25_rt_autobind(ax25, &fsa->fsa_ax25.sax25_call)) < 0) {
kfree(digi);
- goto out;
+ goto out_release;
}
ax25_fillin_cb(ax25, ax25->ax25_dev);
if (ax25->ax25_dev == NULL) {
kfree(digi);
err = -EHOSTUNREACH;
- goto out;
+ goto out_release;
}
}
if (sk->sk_type == SOCK_SEQPACKET &&
(ax25t=ax25_find_cb(&ax25->source_addr, &fsa->fsa_ax25.sax25_call, digi,
- ax25->ax25_dev->dev))) {
+ ax25->ax25_dev->dev))) {
kfree(digi);
err = -EADDRINUSE; /* Already such a connection */
ax25_cb_put(ax25t);
- goto out;
+ goto out_release;
}
ax25->dest_addr = fsa->fsa_ax25.sax25_call;
if (sk->sk_type != SOCK_SEQPACKET) {
sock->state = SS_CONNECTED;
sk->sk_state = TCP_ESTABLISHED;
- goto out;
+ goto out_release;
}
/* Move to connecting socket, ax.25 lapb WAIT_UA.. */
/* Now the loop */
if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) {
err = -EINPROGRESS;
- goto out;
+ goto out_release;
}
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 (;;) {
+ prepare_to_wait(sk->sk_sleep, &wait,
+ TASK_INTERRUPTIBLE);
if (sk->sk_state != TCP_SYN_SENT)
break;
- set_current_state(TASK_INTERRUPTIBLE);
- release_sock(sk);
- 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) {
/* Not in ABM, not in WAIT_UA -> failed */
sock->state = SS_UNCONNECTED;
err = sock_error(sk); /* Always set at this point */
- goto out;
+ goto out_release;
}
sock->state = SS_CONNECTED;
- err=0;
-out:
+ err = 0;
+out_release:
release_sock(sk);
return err;
}
-
static int ax25_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;
* The read 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;
- release_sock(sk);
- current->state = TASK_INTERRUPTIBLE;
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;
}
- 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;
newsk = skb->sk;
- newsk->sk_socket = newsock;
- newsk->sk_sleep = &newsock->wait;
+ sock_graft(newsk, newsock);
/* Now attach up the new socket */
kfree_skb(skb);
sk->sk_ack_backlog--;
- newsock->sk = newsk;
newsock->state = SS_CONNECTED;
out:
struct sockaddr_ax25 sax;
struct sk_buff *skb;
ax25_digi dtmp, *dp;
- unsigned char *asmptr;
ax25_cb *ax25;
size_t size;
int lv, err, addr_len = msg->msg_namelen;
+ /* AX.25 empty data frame has no meaning : don't send */
+ if (len == 0) {
+ return (0);
+ }
+
if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
return -EINVAL;
err = -EMSGSIZE;
goto out;
}
-
+
if (usax != NULL) {
if (usax->sax25_family != AF_AX25) {
err = -EINVAL;
goto out;
}
- if (addr_len == sizeof(struct sockaddr_ax25)) {
- printk(KERN_WARNING "ax25_sendmsg(): %s uses obsolete socket structure\n",
- current->comm);
- }
- else if (addr_len != sizeof(struct full_sockaddr_ax25)) {
- /* support for old structure may go away some time */
+ if (addr_len == sizeof(struct sockaddr_ax25))
+ /* ax25_sendmsg(): uses obsolete socket structure */
+ ;
+ else if (addr_len != sizeof(struct full_sockaddr_ax25))
+ /* support for old structure may go away some time
+ * ax25_sendmsg(): uses old (6 digipeater)
+ * socket structure.
+ */
if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
- (addr_len > sizeof(struct full_sockaddr_ax25))) {
- err = -EINVAL;
+ (addr_len > sizeof(struct full_sockaddr_ax25))) {
+ err = -EINVAL;
goto out;
}
- printk(KERN_WARNING "ax25_sendmsg(): %s uses old (6 digipeater) socket structure.\n",
- current->comm);
- }
if (addr_len > sizeof(struct sockaddr_ax25) && usax->sax25_ndigis != 0) {
int ct = 0;
dp = ax25->digipeat;
}
- SOCK_DEBUG(sk, "AX.25: sendto: Addresses built.\n");
-
/* Build a packet */
- SOCK_DEBUG(sk, "AX.25: sendto: building packet.\n");
+ SOCK_DEBUG(sk, "AX.25: sendto: Addresses built. Building packet.\n");
/* Assume the worst case */
size = len + ax25->ax25_dev->dev->hard_header_len;
goto out;
}
- skb->nh.raw = skb->data;
+ skb_reset_network_header(skb);
/* Add the PID if one is not supplied by the user in the skb */
- if (!ax25->pidincl) {
- asmptr = skb_push(skb, 1);
- *asmptr = sk->sk_protocol;
- }
+ if (!ax25->pidincl)
+ *skb_push(skb, 1) = sk->sk_protocol;
SOCK_DEBUG(sk, "AX.25: Transmitting buffer\n");
goto out;
}
- asmptr = skb_push(skb, 1 + ax25_addr_size(dp));
+ skb_push(skb, 1 + ax25_addr_size(dp));
SOCK_DEBUG(sk, "Building AX.25 Header (dp=%p).\n", dp);
SOCK_DEBUG(sk, "Num digipeaters=%d\n", dp->ndigi);
/* Build an AX.25 header */
- asmptr += (lv = ax25_addr_build(asmptr, &ax25->source_addr,
- &sax.sax25_call, dp,
- AX25_COMMAND, AX25_MODULUS));
+ lv = ax25_addr_build(skb->data, &ax25->source_addr, &sax.sax25_call,
+ dp, AX25_COMMAND, AX25_MODULUS);
SOCK_DEBUG(sk, "Built header (%d bytes)\n",lv);
- skb->h.raw = asmptr;
+ skb_set_transport_header(skb, lv);
- SOCK_DEBUG(sk, "base=%p pos=%p\n", skb->data, asmptr);
+ SOCK_DEBUG(sk, "base=%p pos=%p\n",
+ skb->data, skb_transport_header(skb));
- *asmptr = AX25_UI;
+ *skb_transport_header(skb) = AX25_UI;
/* Datagram frames go straight out of the door as UI */
ax25_queue_xmit(skb, ax25->ax25_dev->dev);
/* Now we can treat all alike */
skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT,
- flags & MSG_DONTWAIT, &err);
+ flags & MSG_DONTWAIT, &err);
if (skb == NULL)
goto out;
if (!ax25_sk(sk)->pidincl)
skb_pull(skb, 1); /* Remove PID */
- skb->h.raw = skb->data;
- copied = skb->len;
+ skb_reset_transport_header(skb);
+ copied = skb->len;
+
+ /* AX.25 empty data frame has no meaning : ignore it */
+ if (copied == 0) {
+ err = copied;
+ skb_free_datagram(sk, skb);
+ goto out;
+ }
if (copied > size) {
copied = size;
struct sockaddr_ax25 *sax = (struct sockaddr_ax25 *)msg->msg_name;
ax25_digi digi;
ax25_address src;
+ const unsigned char *mac = skb_mac_header(skb);
- ax25_addr_parse(skb->mac.raw+1, skb->data-skb->mac.raw-1, &src, NULL, &digi, NULL, NULL);
-
+ ax25_addr_parse(mac + 1, skb->data - mac - 1, &src, NULL,
+ &digi, NULL, NULL);
sax->sax25_family = AF_AX25;
/* We set this correctly, even though we may not let the
application know the digi calls further down (because it
/* 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;
- res = put_user(amount, (int __user *)argp);
+ res = put_user(amount, (int __user *) argp);
break;
}
case SIOCGSTAMP:
- if (sk != NULL) {
- res = sock_get_timestamp(sk, argp);
- break;
- }
- res = -EINVAL;
+ res = sock_get_timestamp(sk, argp);
+ break;
+
+ case SIOCGSTAMPNS:
+ res = sock_get_timestampns(sk, argp);
break;
case SIOCAX25ADDUID: /* Add a uid to the uid/call map table */
break;
default:
- res = dev_ioctl(cmd, argp);
+ res = -ENOIOCTLCMD;
break;
}
release_sock(sk);
#ifdef CONFIG_PROC_FS
static void *ax25_info_start(struct seq_file *seq, loff_t *pos)
+ __acquires(ax25_list_lock)
{
struct ax25_cb *ax25;
struct hlist_node *node;
return hlist_entry( ((struct ax25_cb *)v)->ax25_node.next,
struct ax25_cb, ax25_node);
}
-
+
static void ax25_info_stop(struct seq_file *seq, void *v)
+ __releases(ax25_list_lock)
{
spin_unlock_bh(&ax25_list_lock);
}
static int ax25_info_show(struct seq_file *seq, void *v)
{
ax25_cb *ax25 = v;
+ char buf[11];
int k;
seq_printf(seq, "%8.8lx %s %s%s ",
(long) ax25,
ax25->ax25_dev == NULL? "???" : ax25->ax25_dev->dev->name,
- ax2asc(&ax25->source_addr),
+ ax2asc(buf, &ax25->source_addr),
ax25->iamdigi? "*":"");
- seq_printf(seq, "%s", ax2asc(&ax25->dest_addr));
+ seq_printf(seq, "%s", ax2asc(buf, &ax25->dest_addr));
for (k=0; (ax25->digipeat != NULL) && (k < ax25->digipeat->ndigi); k++) {
seq_printf(seq, ",%s%s",
- ax2asc(&ax25->digipeat->calls[k]),
+ ax2asc(buf, &ax25->digipeat->calls[k]),
ax25->digipeat->repeated[k]? "*":"");
}
ax25->paclen);
if (ax25->sk != NULL) {
- bh_lock_sock(ax25->sk);
- seq_printf(seq," %d %d %ld\n",
+ seq_printf(seq, " %d %d %lu\n",
atomic_read(&ax25->sk->sk_wmem_alloc),
atomic_read(&ax25->sk->sk_rmem_alloc),
- ax25->sk->sk_socket != NULL ? SOCK_INODE(ax25->sk->sk_socket)->i_ino : 0L);
- bh_unlock_sock(ax25->sk);
+ sock_i_ino(ax25->sk));
} else {
seq_puts(seq, " * * *\n");
}
return 0;
}
-static struct seq_operations ax25_info_seqops = {
+static const struct seq_operations ax25_info_seqops = {
.start = ax25_info_start,
.next = ax25_info_next,
.stop = ax25_info_stop,
return seq_open(file, &ax25_info_seqops);
}
-static struct file_operations ax25_info_fops = {
+static const struct file_operations ax25_info_fops = {
.owner = THIS_MODULE,
.open = ax25_info_open,
.read = seq_read,
.owner = THIS_MODULE,
};
-static struct proto_ops ax25_proto_ops = {
- .family = PF_AX25,
- .owner = THIS_MODULE,
- .release = ax25_release,
- .bind = ax25_bind,
- .connect = ax25_connect,
- .socketpair = sock_no_socketpair,
- .accept = ax25_accept,
- .getname = ax25_getname,
- .poll = datagram_poll,
- .ioctl = ax25_ioctl,
- .listen = ax25_listen,
- .shutdown = ax25_shutdown,
- .setsockopt = ax25_setsockopt,
- .getsockopt = ax25_getsockopt,
- .sendmsg = ax25_sendmsg,
- .recvmsg = ax25_recvmsg,
- .mmap = sock_no_mmap,
- .sendpage = sock_no_sendpage,
+static const struct proto_ops ax25_proto_ops = {
+ .family = PF_AX25,
+ .owner = THIS_MODULE,
+ .release = ax25_release,
+ .bind = ax25_bind,
+ .connect = ax25_connect,
+ .socketpair = sock_no_socketpair,
+ .accept = ax25_accept,
+ .getname = ax25_getname,
+ .poll = datagram_poll,
+ .ioctl = ax25_ioctl,
+ .listen = ax25_listen,
+ .shutdown = ax25_shutdown,
+ .setsockopt = ax25_setsockopt,
+ .getsockopt = ax25_getsockopt,
+ .sendmsg = ax25_sendmsg,
+ .recvmsg = ax25_recvmsg,
+ .mmap = sock_no_mmap,
+ .sendpage = sock_no_sendpage,
};
/*
* Called by socket.c on kernel start up
*/
-static struct packet_type ax25_packet_type = {
- .type = __constant_htons(ETH_P_AX25),
- .dev = NULL, /* All devices */
+static struct packet_type ax25_packet_type __read_mostly = {
+ .type = cpu_to_be16(ETH_P_AX25),
.func = ax25_kiss_rcv,
};
.notifier_call =ax25_device_event,
};
-EXPORT_SYMBOL(ax25_encapsulate);
-EXPORT_SYMBOL(ax25_rebuild_header);
-EXPORT_SYMBOL(ax25_findbyuid);
-EXPORT_SYMBOL(ax25_find_cb);
-EXPORT_SYMBOL(ax25_linkfail_register);
-EXPORT_SYMBOL(ax25_linkfail_release);
-EXPORT_SYMBOL(ax25_listen_register);
-EXPORT_SYMBOL(ax25_listen_release);
-EXPORT_SYMBOL(ax25_protocol_register);
-EXPORT_SYMBOL(ax25_protocol_release);
-EXPORT_SYMBOL(ax25_send_frame);
-EXPORT_SYMBOL(ax25_uid_policy);
-EXPORT_SYMBOL(ax25cmp);
-EXPORT_SYMBOL(ax2asc);
-EXPORT_SYMBOL(asc2ax);
-EXPORT_SYMBOL(null_ax25_address);
-EXPORT_SYMBOL(ax25_display_timer);
-
static int __init ax25_init(void)
{
int rc = proto_register(&ax25_proto, 0);
register_netdevice_notifier(&ax25_dev_notifier);
ax25_register_sysctl();
- proc_net_fops_create("ax25_route", S_IRUGO, &ax25_route_fops);
- proc_net_fops_create("ax25", S_IRUGO, &ax25_info_fops);
- proc_net_fops_create("ax25_calls", S_IRUGO, &ax25_uid_fops);
+ proc_net_fops_create(&init_net, "ax25_route", S_IRUGO, &ax25_route_fops);
+ proc_net_fops_create(&init_net, "ax25", S_IRUGO, &ax25_info_fops);
+ proc_net_fops_create(&init_net, "ax25_calls", S_IRUGO, &ax25_uid_fops);
out:
return rc;
}
static void __exit ax25_exit(void)
{
- proc_net_remove("ax25_route");
- proc_net_remove("ax25");
- proc_net_remove("ax25_calls");
+ proc_net_remove(&init_net, "ax25_route");
+ proc_net_remove(&init_net, "ax25");
+ proc_net_remove(&init_net, "ax25_calls");
ax25_rt_free();
ax25_uid_free();
ax25_dev_free();
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff