PPPOX_DEAD
sk->sk_state = PPPOX_DEAD;
if ((sk->sk_state & PPPOX_DEAD) &&
sk->sk_state = PPPOX_DEAD;
if (po->sk.sk_state & PPPOX_DEAD)
if (sk->sk_state & PPPOX_DEAD) {
if (sk->sk_state & PPPOX_DEAD) {
sk->sk_state = PPPOX_DEAD;
if (!(sk->sk_state & PPPOX_DEAD)) {
sk->sk_state = PPPOX_DEAD;