static int can_bind(addr, port)
{
/* Check to see if this address is not in use already. */
if (pcb_lookup(INADDR_ANY, 0, addr, port, &__tcp__.listen) != NULL) {
return 0;
}
if (pcb_lookup(INADDR_ANY, 0, addr, port, &__tcp__.closed) != NULL) {
return 0;
}
return 1;
}
inline struct tcp_pcb * tcp_active_lookup(in_addr_t __faddr, uint16_t __fport,
in_addr_t __laddr, uint16_t __lport)
{
return (struct tcp_pcb *)pcb_lookup(__faddr, __fport,
__laddr, __lport,
&__tcp__.active);
}
int udp_connect(struct udp_pcb * __up, in_addr_t __addr, uint16_t __port)
{
int ret = 0;
if (__up == NULL) {
DCC_LOG1(LOG_ERROR, "<%05x> NULL", (int)__up);
/* FIXME: not a socket? The semantic here is not exactly the same
as the sockets API. */
return -ENOTSOCK;
}
DCC_LOG3(LOG_TRACE, "<%05x> %I:%d", (int)__up, __addr, ntohs(__port));
if ((__port == 0) && (__addr != INADDR_ANY)) {
DCC_LOG1(LOG_WARNING, "<%05x> invalid port.", (int)__up);
return -EADDRNOTAVAIL;
}
tcpip_net_lock();
if ((__addr == INADDR_ANY) && (__port == 0)) {
__up->u_faddr = __addr;
__up->u_fport = __port;
__os_cond_signal(__up->u_rcv_cond);
} else {
if (pcb_lookup(__addr, __port, __up->u_laddr,
__up->u_lport, &__udp__.active)) {
DCC_LOG3(LOG_WARNING, "<%05x> %I:%d in use", (int)__up,
__addr, ntohs(__port));
ret = -EADDRINUSE;
} else {
__up->u_faddr = __addr;
__up->u_fport = __port;
__os_cond_signal(__up->u_rcv_cond);
}
}
tcpip_net_unlock();
return ret;
}
