/* Set a reuseport bind on a socket.
*/
int ci_udp_reuseport_bind(citp_socket* ep, ci_fd_t fd,
const struct sockaddr* sa, socklen_t sa_len)
{
int rc;
ci_uint32 laddr_be32 = ci_get_ip4_addr(ep->s->domain, sa);
int lport_be16 = ((struct sockaddr_in*)sa)->sin_port;
ci_assert_nequal(ep->s->s_flags & CI_SOCK_FLAG_REUSEPORT, 0);
/* We cannot support binding to port 0 as the kernel would assign
* the socket a port number. We must move the socket before binding
* the OS socket and we don't have a port number to look up
* clusters.
*/
if( lport_be16 == 0 ) {
LOG_UC(ci_log("%s: Binding to port 0 with reuseport set not supported",
__FUNCTION__));
RET_WITH_ERRNO(ENOSYS);
}
if( (rc = ci_tcp_ep_reuseport_bind(fd, CITP_OPTS.cluster_name,
CITP_OPTS.cluster_size,
CITP_OPTS.cluster_restart_opt, laddr_be32,
lport_be16)) != 0 ) {
errno = -rc;
return -1;
}
return rc;
}
/* Set a reuseport bind on a socket.
*/
int ci_tcp_reuseport_bind(ci_sock_cmn* sock, ci_fd_t fd)
{
int rc;
/* With legacy reuseport we delay the __ci_bind actions to avoid errors
* when trying to re-use a port for the os socket, so won't have set the
* PORT_BOUND flag yet.
*/
ci_assert(((sock->s_flags & CI_SOCK_FLAG_PORT_BOUND) != 0) ||
((sock->s_flags & CI_SOCK_FLAG_REUSEPORT_LEGACY) != 0));
ci_assert_nequal(sock->s_flags & CI_SOCK_FLAG_REUSEPORT, 0);
if ( (rc = ci_tcp_ep_reuseport_bind(fd, CITP_OPTS.cluster_name,
CITP_OPTS.cluster_size,
CITP_OPTS.cluster_restart_opt,
sock_laddr_be32(sock),
sock_lport_be16(sock))) != 0 ) {
errno = -rc;
return -1;
}
return 0;
}
