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[INET_TWSK]: Introduce inet_twsk_alloc

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With the parts of tcp_time_wait that are not TCP specific, tcp_time_wait uses
it and so will dccp_time_wait.

Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnaldo Carvalho de Melo
2005-08-09 20:09:59 -07:00
committed by David S. Miller
parent e48c414ee6
commit c676270bcd
3 changed files with 33 additions and 22 deletions
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28
net/ipv4/inet_timewait_sock.c
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@ -81,3 +81,31 @@ void __inet_twsk_hashdance(struct inet_timewait_sock *tw, struct sock *sk,
write_unlock(&ehead->lock);
}
struct inet_timewait_sock *inet_twsk_alloc(const struct sock *sk, const int state)
{
struct inet_timewait_sock *tw = kmem_cache_alloc(sk->sk_prot_creator->twsk_slab,
SLAB_ATOMIC);
if (tw != NULL) {
const struct inet_sock *inet = inet_sk(sk);
/* Give us an identity. */
tw->tw_daddr = inet->daddr;
tw->tw_rcv_saddr = inet->rcv_saddr;
tw->tw_bound_dev_if = sk->sk_bound_dev_if;
tw->tw_num = inet->num;
tw->tw_state = TCP_TIME_WAIT;
tw->tw_substate = state;
tw->tw_sport = inet->sport;
tw->tw_dport = inet->dport;
tw->tw_family = sk->sk_family;
tw->tw_reuse = sk->sk_reuse;
tw->tw_hashent = sk->sk_hashent;
tw->tw_ipv6only = 0;
tw->tw_prot = sk->sk_prot_creator;
atomic_set(&tw->tw_refcnt, 1);
inet_twsk_dead_node_init(tw);
}
return tw;
}