void unregister_hdlc_device(struct net_device *dev)
{
rtnl_lock();
hdlc_proto_detach(dev_to_hdlc(dev));
unregister_netdevice(dev);
rtnl_unlock();
}
void unregister_hdlc_device(hdlc_device *hdlc)
{
hdlc_proto_detach(hdlc);
unregister_netdev(hdlc_to_dev(hdlc));
MOD_DEC_USE_COUNT;
}
int hdlc_cisco_ioctl(struct net_device *dev, struct ifreq *ifr)
{
cisco_proto __user *cisco_s = ifr->ifr_settings.ifs_ifsu.cisco;
const size_t size = sizeof(cisco_proto);
cisco_proto new_settings;
hdlc_device *hdlc = dev_to_hdlc(dev);
int result;
switch (ifr->ifr_settings.type) {
case IF_GET_PROTO:
ifr->ifr_settings.type = IF_PROTO_CISCO;
if (ifr->ifr_settings.size < size) {
ifr->ifr_settings.size = size; /* data size wanted */
return -ENOBUFS;
}
if (copy_to_user(cisco_s, &hdlc->state.cisco.settings, size))
return -EFAULT;
return 0;
case IF_PROTO_CISCO:
if(!capable(CAP_NET_ADMIN))
return -EPERM;
if(dev->flags & IFF_UP)
return -EBUSY;
if (copy_from_user(&new_settings, cisco_s, size))
return -EFAULT;
if (new_settings.interval < 1 ||
new_settings.timeout < 2)
return -EINVAL;
result=hdlc->attach(dev, ENCODING_NRZ,PARITY_CRC16_PR1_CCITT);
if (result)
return result;
hdlc_proto_detach(hdlc);
memcpy(&hdlc->state.cisco.settings, &new_settings, size);
memset(&hdlc->proto, 0, sizeof(hdlc->proto));
hdlc->proto.start = cisco_start;
hdlc->proto.stop = cisco_stop;
hdlc->proto.netif_rx = cisco_rx;
hdlc->proto.type_trans = cisco_type_trans;
hdlc->proto.id = IF_PROTO_CISCO;
dev->hard_start_xmit = hdlc->xmit;
dev->hard_header = cisco_hard_header;
dev->hard_header_cache = NULL;
dev->type = ARPHRD_CISCO;
dev->flags = IFF_POINTOPOINT | IFF_NOARP;
dev->addr_len = 0;
netif_dormant_on(dev);
return 0;
}
return -EINVAL;
}
int hdlc_raw_ioctl(struct net_device *dev, struct ifreq *ifr)
{
raw_hdlc_proto __user *raw_s = ifr->ifr_settings.ifs_ifsu.raw_hdlc;
const size_t size = sizeof(raw_hdlc_proto);
raw_hdlc_proto new_settings;
hdlc_device *hdlc = dev_to_hdlc(dev);
int result;
switch (ifr->ifr_settings.type) {
case IF_GET_PROTO:
ifr->ifr_settings.type = IF_PROTO_HDLC;
if (ifr->ifr_settings.size < size) {
ifr->ifr_settings.size = size; /* data size wanted */
return -ENOBUFS;
}
if (copy_to_user(raw_s, &hdlc->state.raw_hdlc.settings, size))
return -EFAULT;
return 0;
case IF_PROTO_HDLC:
if (!capable(CAP_NET_ADMIN))
return -EPERM;
if (dev->flags & IFF_UP)
return -EBUSY;
if (copy_from_user(&new_settings, raw_s, size))
return -EFAULT;
if (new_settings.encoding == ENCODING_DEFAULT)
new_settings.encoding = ENCODING_NRZ;
if (new_settings.parity == PARITY_DEFAULT)
new_settings.parity = PARITY_CRC16_PR1_CCITT;
result = hdlc->attach(dev, new_settings.encoding,
new_settings.parity);
if (result)
return result;
hdlc_proto_detach(hdlc);
memcpy(&hdlc->state.raw_hdlc.settings, &new_settings, size);
memset(&hdlc->proto, 0, sizeof(hdlc->proto));
hdlc->proto.type_trans = raw_type_trans;
hdlc->proto.id = IF_PROTO_HDLC;
dev->hard_start_xmit = hdlc->xmit;
dev->hard_header = NULL;
dev->type = ARPHRD_RAWHDLC;
dev->flags = IFF_POINTOPOINT | IFF_NOARP;
dev->addr_len = 0;
netif_dormant_off(dev);
return 0;
}
return -EINVAL;
}
int hdlc_cisco_ioctl(hdlc_device *hdlc, struct ifreq *ifr)
{
cisco_proto *cisco_s = ifr->ifr_settings.ifs_ifsu.cisco;
const size_t size = sizeof(cisco_proto);
cisco_proto new_settings;
struct net_device *dev = hdlc_to_dev(hdlc);
int result;
switch (ifr->ifr_settings.type) {
case IF_GET_PROTO:
ifr->ifr_settings.type = IF_PROTO_CISCO;
if (ifr->ifr_settings.size < size) {
ifr->ifr_settings.size = size; /* data size wanted */
return -ENOBUFS;
}
if (copy_to_user(cisco_s, &hdlc->state.cisco.settings, size))
return -EFAULT;
return 0;
case IF_PROTO_CISCO:
if(!capable(CAP_NET_ADMIN))
return -EPERM;
if(dev->flags & IFF_UP)
return -EBUSY;
if (copy_from_user(&new_settings, cisco_s, size))
return -EFAULT;
if (new_settings.interval < 1 ||
new_settings.timeout < 2)
return -EINVAL;
result=hdlc->attach(hdlc, ENCODING_NRZ,PARITY_CRC16_PR1_CCITT);
if (result)
return result;
hdlc_proto_detach(hdlc);
memcpy(&hdlc->state.cisco.settings, &new_settings, size);
hdlc->open = cisco_open;
hdlc->stop = cisco_close;
hdlc->netif_rx = cisco_rx;
hdlc->proto = IF_PROTO_CISCO;
dev->hard_start_xmit = hdlc->xmit;
dev->hard_header = cisco_hard_header;
dev->type = ARPHRD_CISCO;
dev->addr_len = 0;
return 0;
}
return -EINVAL;
}
int hdlc_ppp_ioctl(hdlc_device *hdlc, struct ifreq *ifr)
{
struct net_device *dev = hdlc_to_dev(hdlc);
int result;
switch (ifr->ifr_settings.type) {
case IF_GET_PROTO:
ifr->ifr_settings.type = IF_PROTO_PPP;
return 0; /* return protocol only, no settable parameters */
case IF_PROTO_PPP:
if(!capable(CAP_NET_ADMIN))
return -EPERM;
if(dev->flags & IFF_UP)
return -EBUSY;
/* no settable parameters */
result=hdlc->attach(hdlc, ENCODING_NRZ,PARITY_CRC16_PR1_CCITT);
if (result)
return result;
hdlc_proto_detach(hdlc);
memset(&hdlc->proto, 0, sizeof(hdlc->proto));
hdlc->proto.open = ppp_open;
hdlc->proto.close = ppp_close;
hdlc->proto.type_trans = ppp_type_trans;
hdlc->proto.id = IF_PROTO_PPP;
dev->hard_start_xmit = hdlc->xmit;
dev->hard_header = NULL;
dev->type = ARPHRD_PPP;
dev->addr_len = 0;
return 0;
}
return -EINVAL;
}
int hdlc_x25_ioctl(struct net_device *dev, struct ifreq *ifr)
{
hdlc_device *hdlc = dev_to_hdlc(dev);
int result;
switch (ifr->ifr_settings.type) {
case IF_GET_PROTO:
ifr->ifr_settings.type = IF_PROTO_X25;
return 0; /* return protocol only, no settable parameters */
case IF_PROTO_X25:
if(!capable(CAP_NET_ADMIN))
return -EPERM;
if(dev->flags & IFF_UP)
return -EBUSY;
result=hdlc->attach(dev, ENCODING_NRZ,PARITY_CRC16_PR1_CCITT);
if (result)
return result;
hdlc_proto_detach(hdlc);
memset(&hdlc->proto, 0, sizeof(hdlc->proto));
hdlc->proto.open = x25_open;
hdlc->proto.close = x25_close;
hdlc->proto.netif_rx = x25_rx;
hdlc->proto.type_trans = NULL;
hdlc->proto.id = IF_PROTO_X25;
dev->hard_start_xmit = x25_xmit;
dev->hard_header = NULL;
dev->type = ARPHRD_X25;
dev->addr_len = 0;
netif_dormant_off(dev);
return 0;
}
return -EINVAL;
}
int hdlc_raw_eth_ioctl(hdlc_device *hdlc, struct ifreq *ifr)
{
raw_hdlc_proto *raw_s = ifr->ifr_settings.ifs_ifsu.raw_hdlc;
const size_t size = sizeof(raw_hdlc_proto);
raw_hdlc_proto new_settings;
struct net_device *dev = hdlc_to_dev(hdlc);
int result;
void *old_ch_mtu;
int old_qlen;
switch (ifr->ifr_settings.type) {
case IF_GET_PROTO:
ifr->ifr_settings.type = IF_PROTO_HDLC_ETH;
if (ifr->ifr_settings.size < size) {
ifr->ifr_settings.size = size; /* data size wanted */
return -ENOBUFS;
}
if (copy_to_user(raw_s, &hdlc->state.raw_hdlc.settings, size))
return -EFAULT;
return 0;
case IF_PROTO_HDLC_ETH:
if (!capable(CAP_NET_ADMIN))
return -EPERM;
if (dev->flags & IFF_UP)
return -EBUSY;
if (copy_from_user(&new_settings, raw_s, size))
return -EFAULT;
if (new_settings.encoding == ENCODING_DEFAULT)
new_settings.encoding = ENCODING_NRZ;
if (new_settings.parity == PARITY_DEFAULT)
new_settings.parity = PARITY_CRC16_PR1_CCITT;
result = hdlc->attach(hdlc, new_settings.encoding,
new_settings.parity);
if (result)
return result;
hdlc_proto_detach(hdlc);
memcpy(&hdlc->state.raw_hdlc.settings, &new_settings, size);
hdlc->open = NULL;
hdlc->stop = NULL;
hdlc->netif_rx = NULL;
hdlc->type_trans = eth_type_trans;
hdlc->proto = IF_PROTO_HDLC_ETH;
dev->hard_start_xmit = eth_tx;
old_ch_mtu = dev->change_mtu;
old_qlen = dev->tx_queue_len;
ether_setup(dev);
dev->change_mtu = old_ch_mtu;
dev->tx_queue_len = old_qlen;
memcpy(dev->dev_addr, "\x00\x01", 2);
get_random_bytes(dev->dev_addr + 2, ETH_ALEN - 2);
return 0;
}
return -EINVAL;
}
