static int
udp6_attach(struct socket *so, int proto, struct thread *td)
{
struct inpcb *inp;
struct inpcbinfo *pcbinfo;
int error;
pcbinfo = udp_get_inpcbinfo(so->so_proto->pr_protocol);
inp = sotoinpcb(so);
KASSERT(inp == NULL, ("udp6_attach: inp != NULL"));
if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
error = soreserve(so, udp_sendspace, udp_recvspace);
if (error)
return (error);
}
INP_INFO_WLOCK(pcbinfo);
error = in_pcballoc(so, pcbinfo);
if (error) {
INP_INFO_WUNLOCK(pcbinfo);
return (error);
}
inp = (struct inpcb *)so->so_pcb;
inp->inp_vflag |= INP_IPV6;
if ((inp->inp_flags & IN6P_IPV6_V6ONLY) == 0)
inp->inp_vflag |= INP_IPV4;
inp->in6p_hops = -1; /* use kernel default */
inp->in6p_cksum = -1; /* just to be sure */
/*
* XXX: ugly!!
* IPv4 TTL initialization is necessary for an IPv6 socket as well,
* because the socket may be bound to an IPv6 wildcard address,
* which may match an IPv4-mapped IPv6 address.
*/
inp->inp_ip_ttl = V_ip_defttl;
error = udp_newudpcb(inp);
if (error) {
in_pcbdetach(inp);
in_pcbfree(inp);
INP_INFO_WUNLOCK(pcbinfo);
return (error);
}
INP_WUNLOCK(inp);
INP_INFO_WUNLOCK(pcbinfo);
return (0);
}
static int
udp_attach(struct socket *so, int proto, struct thread *td)
{
struct inpcb *inp;
struct inpcbinfo *pcbinfo;
int error;
pcbinfo = get_inpcbinfo(so->so_proto->pr_protocol);
inp = sotoinpcb(so);
KASSERT(inp == NULL, ("udp_attach: inp != NULL"));
error = soreserve(so, udp_sendspace, udp_recvspace);
if (error)
return (error);
INP_INFO_WLOCK(pcbinfo);
error = in_pcballoc(so, pcbinfo);
if (error) {
INP_INFO_WUNLOCK(pcbinfo);
return (error);
}
inp = sotoinpcb(so);
inp->inp_vflag |= INP_IPV4;
inp->inp_ip_ttl = V_ip_defttl;
error = udp_newudpcb(inp);
if (error) {
in_pcbdetach(inp);
in_pcbfree(inp);
INP_INFO_WUNLOCK(pcbinfo);
return (error);
}
INP_WUNLOCK(inp);
INP_INFO_WUNLOCK(pcbinfo);
return (0);
}