#include <linux/socket.h> /* SOL_SOCKET */
#include <linux/errno.h> /* error codes */
#include <linux/capability.h>
-#include <linux/mm.h> /* verify_area */
+#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/time.h> /* struct timeval */
#include <linux/skbuff.h>
#endif
struct hlist_head vcc_hash[VCC_HTABLE_SIZE];
-rwlock_t vcc_sklist_lock = RW_LOCK_UNLOCKED;
+DEFINE_RWLOCK(vcc_sklist_lock);
-void __vcc_insert_socket(struct sock *sk)
+static void __vcc_insert_socket(struct sock *sk)
{
struct atm_vcc *vcc = atm_sk(sk);
struct hlist_head *head = &vcc_hash[vcc->vci &
(VCC_HTABLE_SIZE - 1)];
- sk->sk_hashent = vcc->vci & (VCC_HTABLE_SIZE - 1);
+ sk->sk_hash = vcc->vci & (VCC_HTABLE_SIZE - 1);
sk_add_node(sk, head);
}
write_unlock_irq(&vcc_sklist_lock);
}
-void vcc_remove_socket(struct sock *sk)
+static void vcc_remove_socket(struct sock *sk)
{
write_lock_irq(&vcc_sklist_lock);
sk_del_node_init(sk);
static struct sk_buff *alloc_tx(struct atm_vcc *vcc,unsigned int size)
{
struct sk_buff *skb;
+ struct sock *sk = sk_atm(vcc);
- if (atomic_read(&vcc->sk->sk_wmem_alloc) && !atm_may_send(vcc, size)) {
+ if (atomic_read(&sk->sk_wmem_alloc) && !atm_may_send(vcc, size)) {
DPRINTK("Sorry: wmem_alloc = %d, size = %d, sndbuf = %d\n",
- atomic_read(&vcc->sk->sk_wmem_alloc), size,
- vcc->sk->sk_sndbuf);
+ atomic_read(&sk->sk_wmem_alloc), size,
+ sk->sk_sndbuf);
return NULL;
}
while (!(skb = alloc_skb(size,GFP_KERNEL))) schedule();
- DPRINTK("AlTx %d += %d\n", atomic_read(&vcc->sk->sk_wmem_alloc),
+ DPRINTK("AlTx %d += %d\n", atomic_read(&sk->sk_wmem_alloc),
skb->truesize);
- atomic_add(skb->truesize, &vcc->sk->sk_wmem_alloc);
+ atomic_add(skb->truesize, &sk->sk_wmem_alloc);
return skb;
}
EXPORT_SYMBOL(vcc_hash);
EXPORT_SYMBOL(vcc_sklist_lock);
EXPORT_SYMBOL(vcc_insert_socket);
-EXPORT_SYMBOL(vcc_remove_socket);
static void vcc_sock_destruct(struct sock *sk)
{
- struct atm_vcc *vcc = atm_sk(sk);
-
- if (atomic_read(&vcc->sk->sk_rmem_alloc))
+ if (atomic_read(&sk->sk_rmem_alloc))
printk(KERN_DEBUG "vcc_sock_destruct: rmem leakage (%d bytes) detected.\n", atomic_read(&sk->sk_rmem_alloc));
- if (atomic_read(&vcc->sk->sk_wmem_alloc))
+ if (atomic_read(&sk->sk_wmem_alloc))
printk(KERN_DEBUG "vcc_sock_destruct: wmem leakage (%d bytes) detected.\n", atomic_read(&sk->sk_wmem_alloc));
-
- kfree(sk->sk_protinfo);
}
static void vcc_def_wakeup(struct sock *sk)
read_unlock(&sk->sk_callback_lock);
}
+static struct proto vcc_proto = {
+ .name = "VCC",
+ .owner = THIS_MODULE,
+ .obj_size = sizeof(struct atm_vcc),
+};
int vcc_create(struct socket *sock, int protocol, int family)
{
sock->sk = NULL;
if (sock->type == SOCK_STREAM)
return -EINVAL;
- sk = sk_alloc(family, GFP_KERNEL, 1, NULL);
+ sk = sk_alloc(family, GFP_KERNEL, &vcc_proto, 1);
if (!sk)
return -ENOMEM;
sock_init_data(sock, sk);
- sk_set_owner(sk, THIS_MODULE);
sk->sk_state_change = vcc_def_wakeup;
sk->sk_write_space = vcc_write_space;
- vcc = sk->sk_protinfo = kmalloc(sizeof(*vcc), GFP_KERNEL);
- if (!vcc) {
- sk_free(sk);
- return -ENOMEM;
- }
-
- memset(vcc, 0, sizeof(*vcc));
- vcc->sk = sk;
+ vcc = atm_sk(sk);
vcc->dev = NULL;
memset(&vcc->local,0,sizeof(struct sockaddr_atmsvc));
memset(&vcc->remote,0,sizeof(struct sockaddr_atmsvc));
vcc->qos.txtp.max_sdu = 1 << 16; /* for meta VCs */
- atomic_set(&vcc->sk->sk_wmem_alloc, 0);
- atomic_set(&vcc->sk->sk_rmem_alloc, 0);
+ atomic_set(&sk->sk_wmem_alloc, 0);
+ atomic_set(&sk->sk_rmem_alloc, 0);
vcc->push = NULL;
vcc->pop = NULL;
vcc->push_oam = NULL;
vcc->vpi = vcc->vci = 0; /* no VCI/VPI yet */
vcc->atm_options = vcc->aal_options = 0;
sk->sk_destruct = vcc_sock_destruct;
- sock->sk = sk;
return 0;
}
struct atm_vcc *vcc = atm_sk(sk);
struct sk_buff *skb;
+ set_bit(ATM_VF_CLOSE, &vcc->flags);
clear_bit(ATM_VF_READY, &vcc->flags);
if (vcc->dev) {
if (vcc->dev->ops->close)
if (vcc->push)
vcc->push(vcc, NULL); /* atmarpd has no push */
- vcc_remove_socket(sk); /* no more receive */
-
- while ((skb = skb_dequeue(&vcc->sk->sk_receive_queue))) {
+ while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) {
atm_return(vcc,skb->truesize);
kfree_skb(skb);
}
module_put(vcc->dev->ops->owner);
atm_dev_put(vcc->dev);
}
+
+ vcc_remove_socket(sk);
}
void vcc_release_async(struct atm_vcc *vcc, int reply)
{
+ struct sock *sk = sk_atm(vcc);
+
set_bit(ATM_VF_CLOSE, &vcc->flags);
- vcc->sk->sk_err = -reply;
+ sk->sk_shutdown |= RCV_SHUTDOWN;
+ sk->sk_err = -reply;
clear_bit(ATM_VF_WAITING, &vcc->flags);
- vcc->sk->sk_state_change(vcc->sk);
+ sk->sk_state_change(sk);
}
EXPORT_SYMBOL(vcc_release_async);
+void atm_dev_release_vccs(struct atm_dev *dev)
+{
+ int i;
+
+ write_lock_irq(&vcc_sklist_lock);
+ for (i = 0; i < VCC_HTABLE_SIZE; i++) {
+ struct hlist_head *head = &vcc_hash[i];
+ struct hlist_node *node, *tmp;
+ struct sock *s;
+ struct atm_vcc *vcc;
+
+ sk_for_each_safe(s, node, tmp, head) {
+ vcc = atm_sk(s);
+ if (vcc->dev == dev) {
+ vcc_release_async(vcc, -EPIPE);
+ sk_del_node_init(s);
+ }
+ }
+ }
+ write_unlock_irq(&vcc_sklist_lock);
+}
+
+
static int adjust_tp(struct atm_trafprm *tp,unsigned char aal)
{
int max_sdu;
static int __vcc_connect(struct atm_vcc *vcc, struct atm_dev *dev, short vpi,
int vci)
{
+ struct sock *sk = sk_atm(vcc);
int error;
if ((vpi != ATM_VPI_UNSPEC && vpi != ATM_VPI_ANY &&
return -EINVAL;
if (vci > 0 && vci < ATM_NOT_RSV_VCI && !capable(CAP_NET_BIND_SERVICE))
return -EPERM;
- error = 0;
+ error = -ENODEV;
if (!try_module_get(dev->ops->owner))
- return -ENODEV;
+ return error;
vcc->dev = dev;
write_lock_irq(&vcc_sklist_lock);
- if ((error = find_ci(vcc, &vpi, &vci))) {
+ if (test_bit(ATM_DF_REMOVED, &dev->flags) ||
+ (error = find_ci(vcc, &vpi, &vci))) {
write_unlock_irq(&vcc_sklist_lock);
goto fail_module_put;
}
vcc->vpi = vpi;
vcc->vci = vci;
- __vcc_insert_socket(vcc->sk);
+ __vcc_insert_socket(sk);
write_unlock_irq(&vcc_sklist_lock);
switch (vcc->qos.aal) {
case ATM_AAL0:
return 0;
fail:
- vcc_remove_socket(vcc->sk);
+ vcc_remove_socket(sk);
fail_module_put:
module_put(dev->ops->owner);
/* ensure we get dev module ref count correct */
if (vcc->qos.txtp.traffic_class == ATM_ANYCLASS ||
vcc->qos.rxtp.traffic_class == ATM_ANYCLASS)
return -EINVAL;
- if (itf != ATM_ITF_ANY) {
- dev = atm_dev_lookup(itf);
- if (!dev)
- return -ENODEV;
- error = __vcc_connect(vcc, dev, vpi, vci);
- if (error) {
- atm_dev_put(dev);
- return error;
- }
+ if (likely(itf != ATM_ITF_ANY)) {
+ dev = try_then_request_module(atm_dev_lookup(itf), "atm-device-%d", itf);
} else {
- struct list_head *p, *next;
-
dev = NULL;
- spin_lock(&atm_dev_lock);
- list_for_each_safe(p, next, &atm_devs) {
- dev = list_entry(p, struct atm_dev, dev_list);
+ mutex_lock(&atm_dev_mutex);
+ if (!list_empty(&atm_devs)) {
+ dev = list_entry(atm_devs.next, struct atm_dev, dev_list);
atm_dev_hold(dev);
- spin_unlock(&atm_dev_lock);
- if (!__vcc_connect(vcc, dev, vpi, vci))
- break;
- atm_dev_put(dev);
- dev = NULL;
- spin_lock(&atm_dev_lock);
}
- spin_unlock(&atm_dev_lock);
- if (!dev)
- return -ENODEV;
+ mutex_unlock(&atm_dev_mutex);
+ }
+ if (!dev)
+ return -ENODEV;
+ error = __vcc_connect(vcc, dev, vpi, vci);
+ if (error) {
+ atm_dev_put(dev);
+ return error;
}
if (vpi == ATM_VPI_UNSPEC || vci == ATM_VCI_UNSPEC)
set_bit(ATM_VF_PARTIAL,&vcc->flags);
if (error)
return error;
sock_recv_timestamp(msg, sk, skb);
- DPRINTK("RcvM %d -= %d\n", atomic_read(&vcc->sk->rmem_alloc), skb->truesize);
+ DPRINTK("RcvM %d -= %d\n", atomic_read(&sk->rmem_alloc), skb->truesize);
atm_return(vcc, skb->truesize);
skb_free_datagram(sk, skb);
return copied;
struct atm_vcc *vcc;
struct sk_buff *skb;
int eff,error;
- const void *buff;
+ const void __user *buff;
int size;
lock_sock(sk);
error = -EMSGSIZE;
goto out;
}
- /* verify_area is done by net/socket.c */
+
eff = (size+3) & ~3; /* align to word boundary */
prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
error = 0;
return mask;
if (vcc->qos.txtp.traffic_class != ATM_NONE &&
- vcc_writable(vcc->sk))
+ vcc_writable(sk))
mask |= POLLOUT | POLLWRNORM | POLLWRBAND;
return mask;
if (!error) error = adjust_tp(&qos->rxtp,qos->aal);
if (error) return error;
if (!vcc->dev->ops->change_qos) return -EOPNOTSUPP;
- if (vcc->sk->sk_family == AF_ATMPVC)
+ if (sk_atm(vcc)->sk_family == AF_ATMPVC)
return vcc->dev->ops->change_qos(vcc,qos,ATM_MF_SET);
return svc_change_qos(vcc,qos);
}
}
int vcc_setsockopt(struct socket *sock, int level, int optname,
- char *optval, int optlen)
+ char __user *optval, int optlen)
{
struct atm_vcc *vcc;
unsigned long value;
return 0;
}
case SO_SETCLP:
- if (get_user(value,(unsigned long *) optval))
+ if (get_user(value,(unsigned long __user *)optval))
return -EFAULT;
if (value) vcc->atm_options |= ATM_ATMOPT_CLP;
else vcc->atm_options &= ~ATM_ATMOPT_CLP;
int vcc_getsockopt(struct socket *sock, int level, int optname,
- char *optval, int *optlen)
+ char __user *optval, int __user *optlen)
{
struct atm_vcc *vcc;
int len;
-EFAULT : 0;
case SO_SETCLP:
return put_user(vcc->atm_options & ATM_ATMOPT_CLP ? 1 :
- 0,(unsigned long *) optval) ? -EFAULT : 0;
+ 0,(unsigned long __user *)optval) ? -EFAULT : 0;
case SO_ATMPVC:
{
struct sockaddr_atmpvc pvc;
return vcc->dev->ops->getsockopt(vcc, level, optname, optval, len);
}
-
-#if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE)
-#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
-struct net_bridge;
-struct net_bridge_fdb_entry *(*br_fdb_get_hook)(struct net_bridge *br,
- unsigned char *addr) = NULL;
-void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent) = NULL;
-#if defined(CONFIG_ATM_LANE_MODULE) || defined(CONFIG_BRIDGE_MODULE)
-EXPORT_SYMBOL(br_fdb_get_hook);
-EXPORT_SYMBOL(br_fdb_put_hook);
-#endif /* defined(CONFIG_ATM_LANE_MODULE) || defined(CONFIG_BRIDGE_MODULE) */
-#endif /* defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) */
-#endif /* defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE) */
-
-
static int __init atm_init(void)
{
int error;
+ if ((error = proto_register(&vcc_proto, 0)) < 0)
+ goto out;
+
if ((error = atmpvc_init()) < 0) {
printk(KERN_ERR "atmpvc_init() failed with %d\n", error);
- goto failure;
+ goto out_unregister_vcc_proto;
}
if ((error = atmsvc_init()) < 0) {
printk(KERN_ERR "atmsvc_init() failed with %d\n", error);
- goto failure;
+ goto out_atmpvc_exit;
}
if ((error = atm_proc_init()) < 0) {
printk(KERN_ERR "atm_proc_init() failed with %d\n",error);
- goto failure;
+ goto out_atmsvc_exit;
}
- return 0;
-
-failure:
- atmsvc_exit();
- atmpvc_exit();
+out:
return error;
+out_atmsvc_exit:
+ atmsvc_exit();
+out_atmpvc_exit:
+ atmsvc_exit();
+out_unregister_vcc_proto:
+ proto_unregister(&vcc_proto);
+ goto out;
}
static void __exit atm_exit(void)
atm_proc_exit();
atmsvc_exit();
atmpvc_exit();
+ proto_unregister(&vcc_proto);
}
module_init(atm_init);
git://git.onelab.eu / linux-2.6.git / blobdiff