static int clip_setentry(struct atm_vcc *vcc,u32 ip)
{
struct neighbour *neigh;
struct atmarp_entry *entry;
int error;
struct clip_vcc *clip_vcc;
#ifndef __TCS__
struct flowi fl = { .nl_u = { .ip4_u = { .daddr = ip, .tos = 1 } } };
struct rtable *rt;
#else
struct rtable *rt;
struct flowi fl;
memset(&fl,0,sizeof(fl));
fl.nl_u.ip4_u.daddr=ip;
fl.nl_u.ip4_u.tos=1;
#endif
if (vcc->push != clip_push) {
printk(KERN_WARNING "clip_setentry: non-CLIP VCC\n");
return -EBADF;
}
clip_vcc = CLIP_VCC(vcc);
if (!ip) {
if (!clip_vcc->entry) {
printk(KERN_ERR "hiding hidden ATMARP entry\n");
return 0;
}
DPRINTK("setentry: remove\n");
unlink_clip_vcc(clip_vcc);
return 0;
}
error = ip_route_output_key(&rt,&fl);
if (error) return error;
neigh = __neigh_lookup(&clip_tbl,&ip,rt->u.dst.dev,1);
ip_rt_put(rt);
if (!neigh)
return -ENOMEM;
entry = NEIGH2ENTRY(neigh);
if (entry != clip_vcc->entry) {
if (!clip_vcc->entry) DPRINTK("setentry: add\n");
else {
DPRINTK("setentry: update\n");
unlink_clip_vcc(clip_vcc);
}
link_vcc(clip_vcc,entry);
}
error = neigh_update(neigh, llc_oui, NUD_PERMANENT,
NEIGH_UPDATE_F_OVERRIDE|NEIGH_UPDATE_F_ADMIN);
neigh_release(neigh);
return error;
}
static int clip_assign_device(struct atm_vcc *vcc, int itf)
{
struct clip_vcc *clip_vcc;
knet_netdev_t *dev;
if (vcc->push != clip_push)
{
printk(KERN_WARNING "clip_assign_device: non-CLIP VCC\n");
return -EBADF;
}
clip_vcc = CLIP_VCC(vcc);
for (dev = clip_devs; dev && PRIV(dev)->number != itf;
dev = PRIV(dev)->next);
if (!dev)
{
printk(KERN_WARNING "clip_assign_device: no such device\n");
return -ENODEV;
}
if (clip_vcc->entry)
unlink_clip_vcc(clip_vcc);
clip_vcc->dev = dev;
clip_vcc->global_next = clip_vccs;
clip_vccs = clip_vcc;
clip_start_resolving(clip_vcc);
return 0;
}
static int clip_setentry(struct atm_vcc *vcc, __be32 ip)
{
struct neighbour *neigh;
struct atmarp_entry *entry;
int error;
struct clip_vcc *clip_vcc;
struct rtable *rt;
if (vcc->push != clip_push) {
pr_warning("non-CLIP VCC\n");
return -EBADF;
}
clip_vcc = CLIP_VCC(vcc);
if (!ip) {
if (!clip_vcc->entry) {
pr_err("hiding hidden ATMARP entry\n");
return 0;
}
pr_debug("remove\n");
unlink_clip_vcc(clip_vcc);
return 0;
}
rt = ip_route_output(&init_net, ip, 0, 1, 0);
if (IS_ERR(rt))
return PTR_ERR(rt);
neigh = __neigh_lookup(&arp_tbl, &ip, rt->dst.dev, 1);
ip_rt_put(rt);
if (!neigh)
return -ENOMEM;
entry = neighbour_priv(neigh);
if (entry != clip_vcc->entry) {
if (!clip_vcc->entry)
pr_debug("add\n");
else {
pr_debug("update\n");
unlink_clip_vcc(clip_vcc);
}
link_vcc(clip_vcc, entry);
}
error = neigh_update(neigh, llc_oui, NUD_PERMANENT,
NEIGH_UPDATE_F_OVERRIDE | NEIGH_UPDATE_F_ADMIN);
neigh_release(neigh);
return error;
}
int clip_setentry(struct atm_vcc *vcc,u32 ip)
{
struct neighbour *neigh;
struct atmarp_entry *entry;
int error;
struct clip_vcc *clip_vcc;
struct rtable *rt;
if (vcc->push != clip_push) {
printk(KERN_WARNING "clip_setentry: non-CLIP VCC\n");
return -EBADF;
}
clip_vcc = CLIP_VCC(vcc);
if (!ip) {
if (!clip_vcc->entry) {
printk(KERN_ERR "hiding hidden ATMARP entry\n");
return 0;
}
DPRINTK("setentry: remove\n");
unlink_clip_vcc(clip_vcc);
return 0;
}
error = ip_route_output(&rt,ip,0,1,0);
if (error) return error;
neigh = __neigh_lookup(&clip_tbl,&ip,rt->u.dst.dev,1);
ip_rt_put(rt);
if (!neigh)
return -ENOMEM;
entry = NEIGH2ENTRY(neigh);
if (entry != clip_vcc->entry) {
if (!clip_vcc->entry) DPRINTK("setentry: add\n");
else {
DPRINTK("setentry: update\n");
unlink_clip_vcc(clip_vcc);
}
link_vcc(clip_vcc,entry);
}
error = neigh_update(neigh,llc_oui,NUD_PERMANENT,1,0);
neigh_release(neigh);
return error;
}
static int clip_learn(struct clip_vcc *clip_vcc, u32 ip)
{
struct neighbour *neigh;
struct atmarp_entry *entry;
int error;
if (!ip)
{
if (!clip_vcc->entry)
{
printk(KERN_ERR "hiding hidden ATMARP entry\n");
return 0;
}
DPRINTK("setentry: remove\n");
unlink_clip_vcc(clip_vcc);
return 0;
}
neigh = __neigh_lookup(&clip_tbl, &ip, clip_vcc->dev, 1);
if (!neigh)
return -ENOMEM;
del_timer(&clip_vcc->resolve_timer);
clip_vcc->resolve_timeout = 0; /* Mark resolved */
entry = NEIGH2ENTRY(neigh);
if (entry != clip_vcc->entry)
{
if (!clip_vcc->entry)
DPRINTK("setentry: add\n");
else
{
DPRINTK("setentry: update %p\n", clip_vcc->entry);
unlink_clip_vcc(clip_vcc);
}
link_vcc(clip_vcc, entry);
}
error = neigh_update(neigh, llc_oui, NUD_PERMANENT, 1, 0);
entry->expires = jiffies + CLIP_ENTRY_EXPIRE;
neigh_release(neigh);
return error;
}
static void clip_push(struct atm_vcc *vcc, struct sk_buff *skb)
{
struct clip_vcc *clip_vcc = CLIP_VCC(vcc);
pr_debug("\n");
if (!clip_devs) {
atm_return(vcc, skb->truesize);
kfree_skb(skb);
return;
}
if (!skb) {
pr_debug("removing VCC %p\n", clip_vcc);
if (clip_vcc->entry)
unlink_clip_vcc(clip_vcc);
clip_vcc->old_push(vcc, NULL); /* pass on the bad news */
kfree(clip_vcc);
return;
}
atm_return(vcc, skb->truesize);
skb->dev = clip_vcc->entry ? clip_vcc->entry->neigh->dev : clip_devs;
/* clip_vcc->entry == NULL if we don't have an IP address yet */
if (!skb->dev) {
dev_kfree_skb_any(skb);
return;
}
ATM_SKB(skb)->vcc = vcc;
skb_reset_mac_header(skb);
if (!clip_vcc->encap ||
skb->len < RFC1483LLC_LEN ||
memcmp(skb->data, llc_oui, sizeof(llc_oui)))
skb->protocol = htons(ETH_P_IP);
else {
skb->protocol = ((__be16 *)skb->data)[3];
skb_pull(skb, RFC1483LLC_LEN);
if (skb->protocol == htons(ETH_P_ARP)) {
skb->dev->stats.rx_packets++;
skb->dev->stats.rx_bytes += skb->len;
clip_arp_rcv(skb);
return;
}
}
clip_vcc->last_use = jiffies;
skb->dev->stats.rx_packets++;
skb->dev->stats.rx_bytes += skb->len;
memset(ATM_SKB(skb), 0, sizeof(struct atm_skb_data));
netif_rx(skb);
}
static void clip_vcc_remove(struct clip_vcc *clip_vcc)
{
struct clip_vcc **find_vcc = &clip_vccs;
DPRINTK("removing VCC %p\n", clip_vcc);
del_timer(&clip_vcc->resolve_timer);
if (clip_vcc->entry)
unlink_clip_vcc(clip_vcc);
for (find_vcc = &clip_vccs; *find_vcc && *find_vcc != clip_vcc;
find_vcc = &(*find_vcc)->global_next);
if (*find_vcc)
(*find_vcc) = (*find_vcc)->global_next;
clip_vcc->old_push(clip_vcc->vcc, NULL); /* pass on the bad news */
kfree(clip_vcc);
}
