static void cisco_keepalive_send(hdlc_device *hdlc, u32 type,
u32 par1, u32 par2)
{
struct sk_buff *skb;
cisco_packet *data;
skb = dev_alloc_skb(sizeof(hdlc_header) + sizeof(cisco_packet));
if (!skb) {
printk(KERN_WARNING
"%s: Memory squeeze on cisco_keepalive_send()\n",
hdlc_to_name(hdlc));
return;
}
skb_reserve(skb, 4);
cisco_hard_header(skb, hdlc_to_dev(hdlc), CISCO_KEEPALIVE,
NULL, NULL, 0);
data = (cisco_packet*)skb->tail;
data->type = htonl(type);
data->par1 = htonl(par1);
data->par2 = htonl(par2);
data->rel = 0xFFFF;
/* we will need do_div here if 1000 % HZ != 0 */
data->time = htonl(jiffies * (1000 / HZ));
skb_put(skb, sizeof(cisco_packet));
skb->priority = TC_PRIO_CONTROL;
skb->dev = hdlc_to_dev(hdlc);
skb->nh.raw = skb->data;
dev_queue_xmit(skb);
}
void unregister_hdlc_device(hdlc_device *hdlc)
{
if (hdlc_to_dev(hdlc)->name==NULL)
return; /* device not registered */
destroy_pvc_list(hdlc);
unregister_netdevice(hdlc_to_dev(hdlc));
MOD_DEC_USE_COUNT;
}
int register_hdlc_device(hdlc_device *hdlc)
{
int result;
struct net_device *dev = hdlc_to_dev(hdlc);
dev->get_stats = hdlc_get_stats;
dev->change_mtu = hdlc_change_mtu;
dev->mtu = HDLC_MAX_MTU;
dev->type = ARPHRD_RAWHDLC;
dev->hard_header_len = 16;
dev->flags = IFF_POINTOPOINT | IFF_NOARP;
hdlc->proto = -1;
hdlc->proto_detach = NULL;
result = dev_alloc_name(dev, "hdlc%d");
if (result<0)
return result;
result = register_netdev(dev);
if (result != 0)
return -EIO;
MOD_INC_USE_COUNT;
return 0;
}
static int ppp_open(hdlc_device *hdlc)
{
struct net_device *dev = hdlc_to_dev(hdlc);
void *old_ioctl;
int result;
dev->priv = &hdlc->state.ppp.syncppp_ptr;
hdlc->state.ppp.syncppp_ptr = &hdlc->state.ppp.pppdev;
hdlc->state.ppp.pppdev.dev = dev;
old_ioctl = dev->do_ioctl;
hdlc->state.ppp.old_change_mtu = dev->change_mtu;
sppp_attach(&hdlc->state.ppp.pppdev);
/* sppp_attach nukes them. We don't need syncppp's ioctl */
dev->do_ioctl = old_ioctl;
hdlc->state.ppp.pppdev.sppp.pp_flags &= ~PP_CISCO;
dev->type = ARPHRD_PPP;
result = sppp_open(dev);
if (result) {
sppp_detach(dev);
return result;
}
return 0;
}
int register_hdlc_device(hdlc_device *hdlc)
{
int result;
struct net_device *dev = hdlc_to_dev(hdlc);
dev->init = hdlc_init;
dev->priv = &hdlc->syncppp_ptr;
hdlc->syncppp_ptr = &hdlc->pppdev;
hdlc->pppdev.dev = dev;
hdlc->mode = MODE_NONE;
hdlc->lmi.T391 = 10; /* polling verification timer */
hdlc->lmi.T392 = 15; /* link integrity verification polling timer */
hdlc->lmi.N391 = 6; /* full status polling counter */
hdlc->lmi.N392 = 3; /* error threshold */
hdlc->lmi.N393 = 4; /* monitored events count */
result = dev_alloc_name(dev, "hdlc%d");
if (result<0)
return result;
result = register_netdev(dev);
if (result != 0)
return -EIO;
MOD_INC_USE_COUNT;
return 0;
}
void unregister_hdlc_device(hdlc_device *hdlc)
{
hdlc_proto_detach(hdlc);
unregister_netdev(hdlc_to_dev(hdlc));
MOD_DEC_USE_COUNT;
}
void hdlc_netif_rx(hdlc_device *hdlc, struct sk_buff *skb, int dlci)
{
skb->mac.raw=skb->data;
if (mode_is(hdlc, MODE_SOFT)) {
if (mode_is(hdlc, MODE_FR)) {
fr_netif(hdlc, skb);
return;
} else if (mode_is(hdlc, MODE_CISCO)) {
cisco_netif(hdlc, skb);
return;
} else if (mode_is(hdlc, MODE_PPP)) {
hdlc->stats.rx_bytes+=skb->len;
hdlc->stats.rx_packets++;
skb->protocol=htons(ETH_P_WAN_PPP);
skb->dev=hdlc_to_dev(hdlc);
netif_rx(skb);
return;
}
} else { /* protocol support in hardware/firmware */
hdlc->stats.rx_bytes+=skb->len;
hdlc->stats.rx_packets++;
if (mode_is(hdlc, MODE_HDLC))
skb->protocol=htons(ETH_P_IP);
/* otherwise protocol set by hw driver */
if (mode_is(hdlc, MODE_FR)) {
pvc_device *pvc=find_pvc(hdlc, dlci);
if (!pvc) { /* packet from nonexistent PVC */
hdlc->stats.rx_errors++;
dev_kfree_skb(skb);
}
pvc->stats.rx_bytes+=skb->len;
pvc->stats.rx_packets++;
skb->dev=&pvc->netdev;
} else
skb->dev=hdlc_to_dev(hdlc);
netif_rx(skb);
return;
}
hdlc->stats.rx_errors++; /* unsupported mode */
dev_kfree_skb(skb);
}
static void fr_cisco_open(hdlc_device *hdlc)
{
hdlc->lmi.state = LINK_STATE_CHANGED;
hdlc->lmi.txseq = hdlc->lmi.rxseq = 0;
hdlc->lmi.last_errors = 0xFFFFFFFF;
hdlc->lmi.N391cnt = 0;
if (mode_is(hdlc, MODE_CISCO))
hdlc_to_dev(hdlc)->hard_header=cisco_hard_header;
else
hdlc_to_dev(hdlc)->hard_header=fr_hard_header;
init_timer(&hdlc->timer);
hdlc->timer.expires = jiffies + HZ; /* First poll after 1 second */
hdlc->timer.function = mode_is(hdlc, MODE_FR) ? fr_timer : cisco_timer;
hdlc->timer.data = (unsigned long)hdlc;
add_timer(&hdlc->timer);
}
void hdlc_netif_rx(hdlc_device *hdlc, struct sk_buff *skb)
{
/* skb contains raw HDLC frame, in both hard- and software modes */
skb->mac.raw = skb->data;
switch(hdlc->mode & MODE_MASK) {
case MODE_HDLC:
skb->protocol = htons(ETH_P_IP);
skb->dev = hdlc_to_dev(hdlc);
netif_rx(skb);
return;
case MODE_FR:
fr_netif(hdlc, skb);
return;
case MODE_CISCO:
cisco_netif(hdlc, skb);
return;
#ifdef CONFIG_HDLC_PPP
case MODE_PPP:
#if 0
sppp_input(hdlc_to_dev(hdlc), skb);
#else
skb->protocol = htons(ETH_P_WAN_PPP);
skb->dev = hdlc_to_dev(hdlc);
netif_rx(skb);
#endif
return;
#endif
#ifdef CONFIG_HDLC_X25
case MODE_X25:
skb->dev = hdlc_to_dev(hdlc);
if (lapb_data_received(hdlc, skb) == LAPB_OK)
return;
break;
#endif
}
hdlc->stats.rx_errors++;
dev_kfree_skb_any(skb);
}
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->type_trans = cisco_type_trans;
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;
}
static void ppp_close(hdlc_device *hdlc)
{
struct net_device *dev = hdlc_to_dev(hdlc);
sppp_close(dev);
sppp_detach(dev);
dev->rebuild_header = NULL;
dev->change_mtu = hdlc->state.ppp.old_change_mtu;
dev->mtu = HDLC_MAX_MTU;
dev->hard_header_len = 16;
}
int x25_data_indication(void *token, struct sk_buff *skb)
{
hdlc_device *hdlc = token;
unsigned char *ptr;
ptr = skb_push(skb, 1);
*ptr = 0;
skb->dev = hdlc_to_dev(hdlc);
skb->protocol = htons(ETH_P_X25);
skb->mac.raw = skb->data;
skb->pkt_type = PACKET_HOST;
return netif_rx(skb);
}
static void cisco_keepalive_send(hdlc_device *hdlc, u32 type,
u32 par1, u32 par2)
{
struct sk_buff *skb;
cisco_packet *data;
skb=dev_alloc_skb(sizeof(hdlc_header)+sizeof(cisco_packet));
skb_reserve(skb, 4);
cisco_hard_header(skb, hdlc_to_dev(hdlc), CISCO_KEEPALIVE,
NULL, NULL, 0);
data=(cisco_packet*)skb->tail;
data->type = htonl(type);
data->par1 = htonl(par1);
data->par2 = htonl(par2);
data->rel = 0xFFFF;
data->time = htonl(jiffies * 1000/HZ);
skb_put(skb, sizeof(cisco_packet));
skb->priority=TC_PRIO_CONTROL;
skb->dev = hdlc_to_dev(hdlc);
dev_queue_xmit(skb);
}
static int pvc_xmit(struct sk_buff *skb, struct device *dev)
{
pvc_device *pvc=dev_to_pvc(dev);
if (pvc->state & PVC_STATE_ACTIVE) {
skb->dev = hdlc_to_dev(pvc->master);
pvc->stats.tx_bytes+=skb->len;
pvc->stats.tx_packets++;
dev_queue_xmit(skb);
} else {
pvc->stats.tx_dropped++;
dev_kfree_skb(skb);
}
return 0;
}
static int pvc_xmit(struct sk_buff *skb, struct net_device *dev)
{
pvc_device *pvc = dev_to_pvc(dev);
if (pvc->state & PVC_STATE_ACTIVE) {
skb->dev = hdlc_to_dev(pvc->master);
pvc->stats.tx_bytes += skb->len;
pvc->stats.tx_packets++;
if (pvc->state & PVC_STATE_FECN)
pvc->stats.tx_compressed++; /* TX Congestion counter */
dev_queue_xmit(skb);
} else {
pvc->stats.tx_dropped++;
dev_kfree_skb(skb);
}
return 0;
}
static int pvc_open(struct device *dev)
{
pvc_device *pvc=dev_to_pvc(dev);
int result=0;
if ((hdlc_to_dev(pvc->master)->flags & IFF_UP) == 0)
return -EIO; /* Master must be UP in order to activate PVC */
memset(&(pvc->stats), 0, sizeof(struct net_device_stats));
pvc->state=0;
if (!mode_is(pvc->master, MODE_SOFT) && pvc->master->open_pvc)
result=pvc->master->open_pvc(pvc);
if (result)
return result;
pvc->master->lmi.state |= LINK_STATE_CHANGED;
return 0;
}
void x25_connect_disconnect(void *token, int reason, int code)
{
hdlc_device *hdlc = token;
struct sk_buff *skb;
unsigned char *ptr;
if ((skb = dev_alloc_skb(1)) == NULL) {
printk(KERN_ERR "%s: out of memory\n", hdlc_to_name(hdlc));
return;
}
ptr = skb_put(skb, 1);
*ptr = code;
skb->dev = hdlc_to_dev(hdlc);
skb->protocol = htons(ETH_P_X25);
skb->mac.raw = skb->data;
skb->pkt_type = PACKET_HOST;
netif_rx(skb);
}
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 register_hdlc_device(hdlc_device *hdlc)
{
int result;
#ifndef MODULE
if (!version_printed) {
printk(KERN_INFO "%s\n", version);
version_printed = 1;
}
#endif
hdlc_to_dev(hdlc)->name = hdlc->name;
hdlc_to_dev(hdlc)->init = hdlc_init;
hdlc_to_dev(hdlc)->priv = &hdlc->syncppp_ptr; /* remove in 2.3 */
hdlc->syncppp_ptr = &hdlc->pppdev;
hdlc->pppdev.dev=hdlc_to_dev(hdlc);
hdlc->mode = MODE_NONE;
hdlc->lmi.T391 = 10; /* polling verification timer */
hdlc->lmi.T392 = 15; /* link integrity verification polling timer */
hdlc->lmi.N391 = 6; /* full status polling counter */
hdlc->lmi.N392 = 3; /* error threshold */
hdlc->lmi.N393 = 4; /* monitored events count */
result=dev_alloc_name(hdlc_to_dev(hdlc), "hdlc%d");
if (result<0)
return result;
if (register_netdevice(hdlc_to_dev(hdlc))!=0) {
hdlc_to_dev(hdlc)->name=NULL; /* non-NULL means registered */
return -EIO;
}
dev_init_buffers(hdlc_to_dev(hdlc));
MOD_INC_USE_COUNT;
return 0;
}
static void fr_lmi_send(hdlc_device *hdlc, int fullrep)
{
struct sk_buff *skb;
pvc_device *pvc=hdlc->first_pvc;
int len = mode_is(hdlc, MODE_FR_ANSI) ? LMI_ANSI_LENGTH : LMI_LENGTH;
int stat_len = 3;
u8 *data;
int i=0;
if (mode_is(hdlc, MODE_DCE) && fullrep) {
len += hdlc->pvc_count * (2 + stat_len);
if (len>HDLC_MAX_MTU) {
printk(KERN_WARNING "%s: Too many PVCs while sending "
"LMI full report\n", hdlc->name);
return;
}
}
skb=dev_alloc_skb(len);
memset(skb->data, 0, len);
skb_reserve(skb, 4);
fr_hard_header(skb, hdlc_to_dev(hdlc), LMI_PROTO, NULL, NULL, 0);
data=skb->tail;
data[i++] = LMI_CALLREF;
data[i++] = mode_is(hdlc, MODE_DCE) ? LMI_STATUS : LMI_STATUS_ENQUIRY;
if (mode_is(hdlc, MODE_FR_ANSI))
data[i++] = LMI_ANSI_LOCKSHIFT;
data[i++] = mode_is(hdlc, MODE_FR_CCITT) ? LMI_CCITT_REPTYPE :
LMI_REPTYPE;
data[i++] = LMI_REPT_LEN;
data[i++] = fullrep ? LMI_FULLREP : LMI_INTEGRITY;
data[i++] = mode_is(hdlc, MODE_FR_CCITT) ? LMI_CCITT_ALIVE : LMI_ALIVE;
data[i++] = LMI_INTEG_LEN;
data[i++] = hdlc->lmi.txseq = fr_lmi_nextseq(hdlc->lmi.txseq);
data[i++] = hdlc->lmi.rxseq;
if (mode_is(hdlc, MODE_DCE) && fullrep) {
while (pvc) {
data[i++] = mode_is(hdlc, MODE_FR_CCITT) ?
LMI_CCITT_PVCSTAT:LMI_PVCSTAT;
data[i++] = stat_len;
if ((hdlc->lmi.state & LINK_STATE_RELIABLE) &&
(pvc->netdev.flags & IFF_UP) &&
!(pvc->state & (PVC_STATE_ACTIVE|PVC_STATE_NEW))) {
pvc->state |= PVC_STATE_NEW;
fr_log_dlci_active(pvc);
}
dlci_to_status(hdlc, netdev_dlci(&pvc->netdev),
data+i, pvc->state);
i+=stat_len;
pvc=pvc->next;
}
}
skb_put(skb, i);
skb->priority=TC_PRIO_CONTROL;
skb->dev = hdlc_to_dev(hdlc);
dev_queue_xmit(skb);
}
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;
}
static int c101_run(unsigned long irq, unsigned long winbase)
{
card_t *card;
int result;
if (irq<3 || irq>15 || irq == 6) /* FIXME */ {
printk(KERN_ERR "c101: invalid IRQ value\n");
return -ENODEV;
}
if (winbase<0xC0000 || winbase>0xDFFFF || (winbase&0x3FFF)!=0) {
printk(KERN_ERR "c101: invalid RAM value\n");
return -ENODEV;
}
card=kmalloc(sizeof(card_t), GFP_KERNEL);
if (card==NULL) {
printk(KERN_ERR "c101: unable to allocate memory\n");
return -ENOBUFS;
}
memset(card, 0, sizeof(card_t));
if (request_irq(irq, sca_intr, 0, devname, card)) {
printk(KERN_ERR "c101: could not allocate IRQ\n");
c101_destroy_card(card);
return(-EBUSY);
}
card->irq=irq;
card->win0base=(u8*)winbase;
/* 2 rings required for 1 port */
card->ring_buffers = (RAM_SIZE-C101_WINDOW_SIZE) / (2 * HDLC_MAX_MTU);
printk(KERN_DEBUG "c101: using %u packets rings\n",card->ring_buffers);
card->buff_offset = C101_WINDOW_SIZE; /* Bytes 1D00-1FFF reserved */
readb(card->win0base+C101_PAGE); /* Resets SCA? */
udelay(100);
writeb(0, card->win0base+C101_PAGE);
writeb(0, card->win0base+C101_DTR); /* Power-up for RAM? */
sca_init(card, 0);
card->hdlc.ioctl=sca_ioctl;
card->hdlc.open=sca_open;
card->hdlc.close=sca_close;
hdlc_to_dev(&card->hdlc)->hard_start_xmit=sca_xmit;
hdlc_to_dev(&card->hdlc)->irq=irq;
hdlc_to_dev(&card->hdlc)->tx_queue_len=50;
result=register_hdlc_device(&card->hdlc);
if (result) {
printk(KERN_WARNING "c101: unable to register hdlc device\n");
c101_destroy_card(card);
return result;
}
sca_init_sync_port(card); /* Set up C101 memory */
*new_card=card;
new_card=&card->next_card;
return 0;
}
static int hdlc_set_mode(hdlc_device *hdlc, int mode)
{
int result=-1; /* Default to soft modes */
if(!capable(CAP_NET_ADMIN))
return -EPERM;
if(hdlc_to_dev(hdlc)->flags & IFF_UP)
return -EBUSY;
hdlc_to_dev(hdlc)->addr_len=0;
hdlc->mode=MODE_NONE;
if (!(mode & MODE_SOFT))
switch(mode) {
case MODE_HDLC:
result = hdlc->set_mode ?
hdlc->set_mode(hdlc, MODE_HDLC) : 0;
break;
case MODE_X25: /* By card */
case MODE_CISCO:
case MODE_PPP:
case MODE_FR_ANSI:
case MODE_FR_CCITT:
case MODE_FR_ANSI | MODE_DCE:
case MODE_FR_CCITT | MODE_DCE:
result = hdlc->set_mode ?
hdlc->set_mode(hdlc, mode) : -ENOSYS;
break;
default:
return -EINVAL;
}
if (result) {
mode |= MODE_SOFT; /* Try "host software" protocol */
switch(mode & ~MODE_SOFT) {
case MODE_CISCO:
case MODE_PPP:
break;
case MODE_FR_ANSI:
case MODE_FR_CCITT:
case MODE_FR_ANSI | MODE_DCE:
case MODE_FR_CCITT | MODE_DCE:
hdlc_to_dev(hdlc)->addr_len=2;
*(u16*)hdlc_to_dev(hdlc)->dev_addr=htons(LMI_DLCI);
dlci_to_q922(hdlc_to_dev(hdlc)->broadcast, LMI_DLCI);
break;
default:
return -EINVAL;
}
result = hdlc->set_mode ?
hdlc->set_mode(hdlc, MODE_HDLC) : 0;
}
if (result)
return result;
hdlc->mode=mode;
if (mode_is(hdlc, MODE_PPP))
hdlc_to_dev(hdlc)->type=ARPHRD_PPP;
if (mode_is(hdlc, MODE_X25))
hdlc_to_dev(hdlc)->type=ARPHRD_X25;
else if (mode_is(hdlc, MODE_FR))
hdlc_to_dev(hdlc)->type=ARPHRD_FRAD;
else /* Conflict - raw HDLC and Cisco */
hdlc_to_dev(hdlc)->type=ARPHRD_HDLC;
memset(&(hdlc->stats), 0, sizeof(struct net_device_stats));
destroy_pvc_list(hdlc);
return 0;
}
void unregister_hdlc_device(hdlc_device *hdlc)
{
destroy_pvc_list(hdlc);
unregister_netdev(hdlc_to_dev(hdlc));
MOD_DEC_USE_COUNT;
}
static void cisco_rx(struct sk_buff *skb)
{
hdlc_device *hdlc = dev_to_hdlc(skb->dev);
hdlc_header *data = (hdlc_header*)skb->data;
cisco_packet *cisco_data;
struct in_device *in_dev;
u32 addr, mask;
if (skb->len < sizeof(hdlc_header))
goto rx_error;
if (data->address != CISCO_MULTICAST &&
data->address != CISCO_UNICAST)
goto rx_error;
skb_pull(skb, sizeof(hdlc_header));
switch(ntohs(data->protocol)) {
case CISCO_SYS_INFO:
/* Packet is not needed, drop it. */
dev_kfree_skb_any(skb);
return;
case CISCO_KEEPALIVE:
if (skb->len != CISCO_PACKET_LEN &&
skb->len != CISCO_BIG_PACKET_LEN) {
printk(KERN_INFO "%s: Invalid length of Cisco "
"control packet (%d bytes)\n",
hdlc_to_name(hdlc), skb->len);
goto rx_error;
}
cisco_data = (cisco_packet*)skb->data;
switch(ntohl (cisco_data->type)) {
case CISCO_ADDR_REQ: /* Stolen from syncppp.c :-) */
in_dev = hdlc_to_dev(hdlc)->ip_ptr;
addr = 0;
mask = ~0; /* is the mask correct? */
if (in_dev != NULL) {
struct in_ifaddr **ifap = &in_dev->ifa_list;
while (*ifap != NULL) {
if (strcmp(hdlc_to_name(hdlc),
(*ifap)->ifa_label) == 0) {
addr = (*ifap)->ifa_local;
mask = (*ifap)->ifa_mask;
break;
}
ifap = &(*ifap)->ifa_next;
}
cisco_keepalive_send(hdlc, CISCO_ADDR_REPLY,
addr, mask);
}
dev_kfree_skb_any(skb);
return;
case CISCO_ADDR_REPLY:
printk(KERN_INFO "%s: Unexpected Cisco IP address "
"reply\n", hdlc_to_name(hdlc));
goto rx_error;
case CISCO_KEEPALIVE_REQ:
hdlc->state.cisco.rxseq = ntohl(cisco_data->par1);
if (ntohl(cisco_data->par2)==hdlc->state.cisco.txseq) {
hdlc->state.cisco.last_poll = jiffies;
if (!hdlc->state.cisco.up) {
u32 sec, min, hrs, days;
sec = ntohl(cisco_data->time) / 1000;
min = sec / 60; sec -= min * 60;
hrs = min / 60; min -= hrs * 60;
days = hrs / 24; hrs -= days * 24;
printk(KERN_INFO "%s: Link up (peer "
"uptime %ud%uh%um%us)\n",
hdlc_to_name(hdlc), days, hrs,
min, sec);
}
hdlc->state.cisco.up = 1;
}
dev_kfree_skb_any(skb);
return;
} /* switch(keepalive type) */
} /* switch(protocol) */
printk(KERN_INFO "%s: Unsupported protocol %x\n", hdlc_to_name(hdlc),
data->protocol);
dev_kfree_skb_any(skb);
return;
rx_error:
hdlc->stats.rx_errors++; /* Mark error */
dev_kfree_skb_any(skb);
}
static void cisco_netif(hdlc_device *hdlc, struct sk_buff *skb)
{
hdlc_header *data = (hdlc_header*)skb->data;
cisco_packet *cisco_data;
if (skb->len<sizeof(hdlc_header))
goto rx_error;
if (data->address != CISCO_MULTICAST &&
data->address != CISCO_UNICAST)
goto rx_error;
skb_pull(skb, sizeof(hdlc_header));
switch(ntohs(data->protocol)) {
#ifdef CONFIG_INET
case ETH_P_IP:
#endif
#ifdef CONFIG_IPX
case ETH_P_IPX:
#endif
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
case ETH_P_IPV6:
#endif
#if defined(CONFIG_INET) || defined(CONFIG_IPX) || \
defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
hdlc->stats.rx_packets++; /* data traffic */
hdlc->stats.rx_bytes+=skb->len;
skb->protocol=data->protocol;
skb->dev=hdlc_to_dev(hdlc);
netif_rx(skb);
return;
#endif
case CISCO_KEEPALIVE:
if (skb->len != CISCO_PACKET_LEN &&
skb->len != CISCO_BIG_PACKET_LEN) {
printk(KERN_INFO "%s: Invalid length of Cisco "
"control packet (%d bytes)\n", hdlc->name,
skb->len);
goto rx_error;
}
cisco_data=(cisco_packet*)skb->data;
switch(ntohl (cisco_data->type)) {
case CISCO_ADDR_REQ: { /* Stolen from syncppp.c :-) */
struct in_device *in_dev=hdlc_to_dev(hdlc)->ip_ptr;
u32 addr = 0, mask = ~0; /* is the mask correct? */
if (in_dev != NULL) {
struct in_ifaddr **ifap=&in_dev->ifa_list;
while (*ifap != NULL) {
if (strcmp(hdlc_to_dev(hdlc)->name,
(*ifap)->ifa_label) == 0) {
addr = (*ifap)->ifa_local;
mask = (*ifap)->ifa_mask;
break;
}
ifap=&(*ifap)->ifa_next;
}
hdlc->stats.rx_bytes+=skb->len;
hdlc->stats.rx_packets++;
cisco_keepalive_send(hdlc, CISCO_ADDR_REPLY,
addr, mask);
return;
}
}
case CISCO_ADDR_REPLY:
printk(KERN_INFO "%s: Unexpected Cisco IP address "
"reply\n", hdlc->name);
goto rx_error;
case CISCO_KEEPALIVE_REQ:
hdlc->lmi.rxseq = ntohl(cisco_data->par1);
if (ntohl(cisco_data->par2) == hdlc->lmi.txseq) {
hdlc->lmi.last_poll = jiffies;
if (!(hdlc->lmi.state & LINK_STATE_RELIABLE)) {
u32 sec, min, hrs, days;
sec = ntohl(cisco_data->time)/1000;
min = sec / 60; sec -= min * 60;
hrs = min / 60; min -= hrs * 60;
days = hrs / 24; hrs -= days * 24;
printk(KERN_INFO "%s: Link up (peer uptime %ud%uh%um%us)\n",
hdlc->name, days, hrs, min, sec);
}
hdlc->lmi.state |= LINK_STATE_RELIABLE;
}
hdlc->stats.rx_bytes+=skb->len;
hdlc->stats.rx_packets++;
dev_kfree_skb(skb);
return;
} /* switch(keepalive type) */
} /* switch(protocol) */
printk(KERN_INFO "%s: Unusupported protocol %x\n", hdlc->name,
data->protocol);
hdlc->stats.rx_bytes+=skb->len;
hdlc->stats.rx_packets++;
dev_kfree_skb(skb);
return;
rx_error:
hdlc->stats.rx_errors++; /* Mark error */
dev_kfree_skb(skb);
}
static int hdlc_fr_pvc(hdlc_device *hdlc, int dlci)
{
pvc_device **pvc_p=&hdlc->first_pvc;
pvc_device *pvc;
int result, create=1; /* Create or delete PVC */
if(!capable(CAP_NET_ADMIN))
return -EPERM;
if(dlci<0) {
dlci=-dlci;
create=0;
}
if(dlci<=0 || dlci>=1024)
return -EINVAL; /* Only 10 bits for DLCI, DLCI=0 is reserved */
if(!mode_is(hdlc, MODE_FR))
return -EINVAL; /* Only meaningfull on FR */
while(*pvc_p) {
if (netdev_dlci(&(*pvc_p)->netdev)==dlci)
break;
pvc_p=&(*pvc_p)->next;
}
if (create) { /* Create PVC */
if (*pvc_p!=NULL)
return -EEXIST;
*pvc_p=kmalloc(sizeof(pvc_device), GFP_KERNEL);
pvc=*pvc_p;
memset(pvc, 0, sizeof(pvc_device));
pvc->netdev.name=pvc->name;
pvc->netdev.hard_start_xmit=pvc_xmit;
pvc->netdev.get_stats=pvc_get_stats;
pvc->netdev.open=pvc_open;
pvc->netdev.stop=pvc_close;
pvc->netdev.change_mtu=pvc_change_mtu;
pvc->netdev.mtu=PVC_MAX_MTU;
pvc->netdev.type=ARPHRD_DLCI;
pvc->netdev.hard_header_len=16;
pvc->netdev.hard_header=fr_hard_header;
pvc->netdev.tx_queue_len=0;
pvc->netdev.flags=IFF_POINTOPOINT;
dev_init_buffers(&pvc->netdev);
pvc->master=hdlc;
*(u16*)pvc->netdev.dev_addr=htons(dlci);
dlci_to_q922(pvc->netdev.broadcast, dlci);
pvc->netdev.addr_len=2; /* 16 bits is enough */
pvc->netdev.irq=hdlc_to_dev(hdlc)->irq;
result=dev_alloc_name(&pvc->netdev, "pvc%d");
if (result<0) {
kfree(pvc);
*pvc_p=NULL;
return result;
}
if (register_netdevice(&pvc->netdev)!=0) {
kfree(pvc);
*pvc_p=NULL;
return -EIO;
}
if (!mode_is(hdlc, MODE_SOFT) && hdlc->create_pvc) {
result=hdlc->create_pvc(pvc);
if (result) {
unregister_netdevice(&pvc->netdev);
kfree(pvc);
*pvc_p=NULL;
return result;
}
}
hdlc->lmi.state |= LINK_STATE_CHANGED;
hdlc->pvc_count++;
return 0;
}
if (*pvc_p==NULL) /* Delete PVC */
return -ENOENT;
pvc=*pvc_p;
if (pvc->netdev.flags & IFF_UP)
return -EBUSY; /* PVC in use */
if (!mode_is(hdlc, MODE_SOFT) && hdlc->destroy_pvc)
hdlc->destroy_pvc(pvc);
hdlc->lmi.state |= LINK_STATE_CHANGED;
hdlc->pvc_count--;
*pvc_p=pvc->next;
unregister_netdevice(&pvc->netdev);
kfree(pvc);
return 0;
}
static int hdlc_set_mode(hdlc_device *hdlc, int mode)
{
int result = -1; /* Default to soft modes */
struct net_device *dev = hdlc_to_dev(hdlc);
if(!capable(CAP_NET_ADMIN))
return -EPERM;
if(dev->flags & IFF_UP)
return -EBUSY;
dev->addr_len = 0;
dev->hard_header = NULL;
hdlc->mode = MODE_NONE;
if (!(mode & MODE_SOFT))
switch(mode & MODE_MASK) {
case MODE_HDLC:
result = hdlc->set_mode ?
hdlc->set_mode(hdlc, MODE_HDLC) : 0;
break;
case MODE_CISCO: /* By card */
#ifdef CONFIG_HDLC_PPP
case MODE_PPP:
#endif
#ifdef CONFIG_HDLC_X25
case MODE_X25:
#endif
case MODE_FR:
result = hdlc->set_mode ?
hdlc->set_mode(hdlc, mode) : -ENOSYS;
break;
default:
return -EINVAL;
}
if (result) {
mode |= MODE_SOFT; /* Try "host software" protocol */
switch(mode & MODE_MASK) {
case MODE_CISCO:
dev->hard_header = cisco_hard_header;
break;
#ifdef CONFIG_HDLC_PPP
case MODE_PPP:
break;
#endif
#ifdef CONFIG_HDLC_X25
case MODE_X25:
break;
#endif
case MODE_FR:
dev->hard_header = fr_hard_header;
dev->addr_len = 2;
*(u16*)dev->dev_addr = htons(LMI_DLCI);
dlci_to_q922(dev->broadcast, LMI_DLCI);
break;
default:
return -EINVAL;
}
result = hdlc->set_mode ?
hdlc->set_mode(hdlc, MODE_HDLC) : 0;
}
if (result)
return result;
hdlc->mode = mode;
switch(mode & MODE_MASK) {
#ifdef CONFIG_HDLC_PPP
case MODE_PPP: dev->type = ARPHRD_PPP; break;
#endif
#ifdef CONFIG_HDLC_X25
case MODE_X25: dev->type = ARPHRD_X25; break;
#endif
case MODE_FR: dev->type = ARPHRD_FRAD; break;
case MODE_CISCO: dev->type = ARPHRD_CISCO; break;
default: dev->type = ARPHRD_RAWHDLC;
}
memset(&(hdlc->stats), 0, sizeof(struct net_device_stats));
destroy_pvc_list(hdlc);
return 0;
}
