pppox_sock 150 include/linux/if_pppox.h struct pppox_sock *next; /* for hash table */ pppox_sock 161 include/linux/if_pppox.h static inline struct pppox_sock *pppox_sk(struct sock *sk) pppox_sock 163 include/linux/if_pppox.h return (struct pppox_sock *)sk;