static inline struct lowpan_frag_queue *
fq_find(struct net *net, const struct lowpan_frag_info *frag_info,
const struct ieee802154_addr *src,
const struct ieee802154_addr *dst)
{
struct inet_frag_queue *q;
struct lowpan_create_arg arg;
unsigned int hash;
struct netns_ieee802154_lowpan *ieee802154_lowpan =
net_ieee802154_lowpan(net);
arg.tag = frag_info->d_tag;
arg.d_size = frag_info->d_size;
arg.src = src;
arg.dst = dst;
hash = lowpan_hash_frag(frag_info->d_tag, frag_info->d_size, src, dst);
q = inet_frag_find(&ieee802154_lowpan->frags,
&lowpan_frags, &arg, hash);
if (IS_ERR_OR_NULL(q)) {
inet_frag_maybe_warn_overflow(q, pr_fmt());
return NULL;
}
return container_of(q, struct lowpan_frag_queue, q);
}
/* Find the correct entry in the "incomplete datagrams" queue for
* this IP datagram, and create new one, if nothing is found.
*/
static inline struct ipq *ip_find(struct net *net, struct iphdr *iph, u32 user)
{
struct inet_frag_queue *q;
struct ip4_create_arg arg;
unsigned int hash;
arg.iph = iph;
arg.user = user;
hash = ipqhashfn(iph->id, iph->saddr, iph->daddr, iph->protocol);
q = inet_frag_find(&net->ipv4.frags, &ip4_frags, &arg, hash);
if (IS_ERR_OR_NULL(q)) {
inet_frag_maybe_warn_overflow(q, pr_fmt());
return NULL;
}
return container_of(q, struct ipq, q);
}
static __inline__ struct frag_queue *
fq_find(struct net *net, __be32 id, const struct in6_addr *src, const struct in6_addr *dst)
{
struct inet_frag_queue *q;
struct ip6_create_arg arg;
unsigned int hash;
arg.id = id;
arg.user = IP6_DEFRAG_LOCAL_DELIVER;
arg.src = src;
arg.dst = dst;
read_lock(&ip6_frags.lock);
hash = inet6_hash_frag(id, src, dst, ip6_frags.rnd);
q = inet_frag_find(&net->ipv6.frags, &ip6_frags, &arg, hash);
if (IS_ERR_OR_NULL(q)) {
inet_frag_maybe_warn_overflow(q, pr_fmt());
return NULL;
}
return container_of(q, struct frag_queue, q);
}