ldp_af_global_get
if ((ldp_af_global_get(&global, tnbr->af))->ldp_edisc_socket != -1)
fd = (ldp_af_global_get(&global, af))->ldp_disc_socket;
fd = (ldp_af_global_get(&global, af))->ldp_edisc_socket;
if ((ldp_af_global_get(&global, ia->af))->ldp_disc_socket != -1)
struct ldpd_af_global *ldp_af_global_get(struct ldpd_global *, int);
af_global = ldp_af_global_get(&global, af);
af_global = ldp_af_global_get(&global, af);