l2vpn_pw_find
struct l2vpn_pw *l2vpn_pw_find(struct l2vpn *, unsigned int);
if ((xp = l2vpn_pw_find(xl, pw->ifindex)) == NULL) {
if ((pw = l2vpn_pw_find(l2vpn, xp->ifindex)) == NULL) {
if (l2vpn_pw_find(ltmp, kif->ifindex)) {