secure_tcp_syn_cookie 90 net/ipv4/syncookies.c static __u32 secure_tcp_syn_cookie(__be32 saddr, __be32 daddr, __be16 sport, secure_tcp_syn_cookie 99 net/ipv6/syncookies.c static __u32 secure_tcp_syn_cookie(struct in6_addr *saddr, struct in6_addr *daddr,