/*! Perform system bind on the OS backing socket.
* \param ep Endpoint context
* \param fd Callers FD
* \param ip_addr_be32 Local address to which to bind
* \param port_be16 [in] requested port [out] assigned port
* \return 0 - success & [port_be16] updated
* CI_SOCKET_HANDOVER, Pass to OS, OS bound ok, (no error)
* CI_SOCKET_ERROR & errno set
*/
ci_inline int __ci_bind(ci_netif *ni, ci_sock_cmn *s,
ci_uint32 ip_addr_be32, ci_uint16* port_be16 )
{
int rc;
ci_uint16 user_port; /* Port number specified by user, not by OS.
* See bug 4015 for details */
union ci_sockaddr_u sa_u;
ci_assert(s->domain == AF_INET || s->domain == AF_INET6);
ci_assert( port_be16 );
user_port = *port_be16;
#if CI_CFG_FAKE_IPV6
ci_assert(s->domain == AF_INET || s->domain == AF_INET6);
if( s->domain == AF_INET )
ci_make_sockaddr(&sa_u.sin, s->domain, user_port, ip_addr_be32);
else
ci_make_sockaddr6(&sa_u.sin6, s->domain, user_port, ip_addr_be32);
#else
ci_assert(s->domain == AF_INET);
ci_make_sockaddr(&sa_u.sin, s->domain, user_port, ip_addr_be32);
#endif
#ifdef __ci_driver__
rc = efab_tcp_helper_bind_os_sock(netif2tcp_helper_resource(ni),
SC_SP(s),
&sa_u.sa, sizeof(sa_u), port_be16);
#else
rc = ci_tcp_helper_bind_os_sock(ni, SC_SP(s), &sa_u.sa,
sizeof(sa_u), port_be16);
#endif
/* bug1781: only do this if the earlier bind succeeded.
* check if we can handle this socket */
if( rc != 0 )
return rc;
if( user_port != 0 )
s->s_flags |= CI_SOCK_FLAG_PORT_BOUND;
if( ip_addr_be32 != INADDR_ANY )
s->s_flags |= CI_SOCK_FLAG_ADDR_BOUND;
s->s_flags &= ~CI_SOCK_FLAG_CONNECT_MUST_BIND;
#ifndef __ci_driver__
/* We do not call bind() to alien address from in-kernel code */
if( ip_addr_be32 != INADDR_ANY &&
!cicp_user_addr_is_local_efab(CICP_HANDLE(ni), &ip_addr_be32) )
s->s_flags |= CI_SOCK_FLAG_BOUND_ALIEN;
#endif
return rc;
}
int ci_udp_should_handover(citp_socket* ep, const struct sockaddr* addr,
ci_uint16 lport)
{
ci_uint32 addr_be32;
#if CI_CFG_FAKE_IPV6
if( ep->s->domain == AF_INET6 && ! ci_tcp_ipv6_is_ipv4(addr) )
goto handover;
#endif
if( (CI_BSWAP_BE16(lport) >= NI_OPTS(ep->netif).udp_port_handover_min &&
CI_BSWAP_BE16(lport) <= NI_OPTS(ep->netif).udp_port_handover_max) ||
(CI_BSWAP_BE16(lport) >= NI_OPTS(ep->netif).udp_port_handover2_min &&
CI_BSWAP_BE16(lport) <= NI_OPTS(ep->netif).udp_port_handover2_max) ||
(CI_BSWAP_BE16(lport) >= NI_OPTS(ep->netif).udp_port_handover3_min &&
CI_BSWAP_BE16(lport) <= NI_OPTS(ep->netif).udp_port_handover3_max) ) {
LOG_UC(log(FNS_FMT "HANDOVER (%d <= %d <= %d)",
FNS_PRI_ARGS(ep->netif, ep->s),
NI_OPTS(ep->netif).udp_port_handover_min,
CI_BSWAP_BE16(lport),
NI_OPTS(ep->netif).udp_port_handover_max));
goto handover;
}
addr_be32 = ci_get_ip4_addr(ep->s->domain, addr);
if( addr_be32 != CI_BSWAPC_BE32(INADDR_ANY) &&
! cicp_user_addr_is_local_efab(CICP_HANDLE(ep->netif), &addr_be32) &&
! CI_IP_IS_MULTICAST(addr_be32) ) {
/* Either the bind/getsockname indicated that we need to let the OS
* take this or the local address is not one of ours - so we can safely
* hand-over as bind to a non-ANY addr cannot be revoked.
* The filters (if any) have already been removed, so we just get out. */
goto handover;
}
return 0;
handover:
return 1;
}
