diff options
Diffstat (limited to 'drivers/atm/atmtcp.c')
| -rw-r--r-- | drivers/atm/atmtcp.c | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/drivers/atm/atmtcp.c b/drivers/atm/atmtcp.c index d9fd70280482..fa3c76a2b49d 100644 --- a/drivers/atm/atmtcp.c +++ b/drivers/atm/atmtcp.c @@ -279,6 +279,19 @@ static struct atm_vcc *find_vcc(struct atm_dev *dev, short vpi, int vci) return NULL; } +static int atmtcp_c_pre_send(struct atm_vcc *vcc, struct sk_buff *skb) +{ + struct atmtcp_hdr *hdr; + + if (skb->len < sizeof(struct atmtcp_hdr)) + return -EINVAL; + + hdr = (struct atmtcp_hdr *)skb->data; + if (hdr->length == ATMTCP_HDR_MAGIC) + return -EINVAL; + + return 0; +} static int atmtcp_c_send(struct atm_vcc *vcc,struct sk_buff *skb) { @@ -288,7 +301,6 @@ static int atmtcp_c_send(struct atm_vcc *vcc,struct sk_buff *skb) struct sk_buff *new_skb; int result = 0; - if (!skb->len) return 0; dev = vcc->dev_data; hdr = (struct atmtcp_hdr *) skb->data; if (hdr->length == ATMTCP_HDR_MAGIC) { @@ -327,7 +339,7 @@ done: */ -static struct atmdev_ops atmtcp_v_dev_ops = { +static const struct atmdev_ops atmtcp_v_dev_ops = { .dev_close = atmtcp_v_dev_close, .open = atmtcp_v_open, .close = atmtcp_v_close, @@ -345,6 +357,7 @@ static struct atmdev_ops atmtcp_v_dev_ops = { static const struct atmdev_ops atmtcp_c_dev_ops = { .close = atmtcp_c_close, + .pre_send = atmtcp_c_pre_send, .send = atmtcp_c_send }; @@ -433,9 +446,15 @@ static int atmtcp_remove_persistent(int itf) return -EMEDIUMTYPE; } dev_data = PRIV(dev); - if (!dev_data->persist) return 0; + if (!dev_data->persist) { + atm_dev_put(dev); + return 0; + } dev_data->persist = 0; - if (PRIV(dev)->vcc) return 0; + if (PRIV(dev)->vcc) { + atm_dev_put(dev); + return 0; + } kfree(dev_data); atm_dev_put(dev); atm_dev_deregister(dev); @@ -488,6 +507,7 @@ static void __exit atmtcp_exit(void) deregister_atm_ioctl(&atmtcp_ioctl_ops); } +MODULE_DESCRIPTION("ATM over TCP"); MODULE_LICENSE("GPL"); module_init(atmtcp_init); module_exit(atmtcp_exit); |