static int reg_vif_xmit(struct sk_buff *skb, struct net_device *dev)
{
read_lock(&mrt_lock);
((struct net_device_stats *)netdev_priv(dev))->tx_bytes += skb->len;
((struct net_device_stats *)netdev_priv(dev))->tx_packets++;
ip6mr_cache_report(skb, reg_vif_num, MRT6MSG_WHOLEPKT);
read_unlock(&mrt_lock);
kfree_skb(skb);
return 0;
}
static netdev_tx_t reg_vif_xmit(struct sk_buff *skb,
struct net_device *dev)
{
struct net *net = dev_net(dev);
read_lock(&mrt_lock);
dev->stats.tx_bytes += skb->len;
dev->stats.tx_packets++;
ip6mr_cache_report(net, skb, net->ipv6.mroute_reg_vif_num,
MRT6MSG_WHOLEPKT);
read_unlock(&mrt_lock);
kfree_skb(skb);
return NETDEV_TX_OK;
}
static int
ip6mr_cache_unresolved(mifi_t mifi, struct sk_buff *skb)
{
int err;
struct mfc6_cache *c;
spin_lock_bh(&mfc_unres_lock);
for (c = mfc_unres_queue; c; c = c->next) {
if (ipv6_addr_equal(&c->mf6c_mcastgrp, &ipv6_hdr(skb)->daddr) &&
ipv6_addr_equal(&c->mf6c_origin, &ipv6_hdr(skb)->saddr))
break;
}
if (c == NULL) {
/*
* Create a new entry if allowable
*/
if (atomic_read(&cache_resolve_queue_len) >= 10 ||
(c = ip6mr_cache_alloc_unres()) == NULL) {
spin_unlock_bh(&mfc_unres_lock);
kfree_skb(skb);
return -ENOBUFS;
}
/*
* Fill in the new cache entry
*/
c->mf6c_parent = -1;
c->mf6c_origin = ipv6_hdr(skb)->saddr;
c->mf6c_mcastgrp = ipv6_hdr(skb)->daddr;
/*
* Reflect first query at pim6sd
*/
if ((err = ip6mr_cache_report(skb, mifi, MRT6MSG_NOCACHE)) < 0) {
/* If the report failed throw the cache entry
out - Brad Parker
*/
spin_unlock_bh(&mfc_unres_lock);
kmem_cache_free(mrt_cachep, c);
kfree_skb(skb);
return err;
}
atomic_inc(&cache_resolve_queue_len);
c->next = mfc_unres_queue;
mfc_unres_queue = c;
ipmr_do_expire_process(1);
}
/*
* See if we can append the packet
*/
if (c->mfc_un.unres.unresolved.qlen > 3) {
kfree_skb(skb);
err = -ENOBUFS;
} else {
skb_queue_tail(&c->mfc_un.unres.unresolved, skb);
err = 0;
}
spin_unlock_bh(&mfc_unres_lock);
return err;
}
