vsw_mac_multicast_add
ret = vsw_mac_multicast_add(vswp, NULL, mcst_p,
extern int vsw_mac_multicast_add(vsw_t *, vsw_port_t *, mcst_addr_t *, int);
int vsw_mac_multicast_add(vsw_t *vswp, vsw_port_t *port, mcst_addr_t *mcst_p,
extern int vsw_mac_multicast_add(vsw_t *vswp, vsw_port_t *port,
if (vsw_mac_multicast_add(vswp, port, mcst_p,