New files:

Modified files:
include/net/secure_seq.h
net/ipv4/tcp_input.c
net/ipv6/syncookies.c
net/ipv4/syncookies.c
net/core/secure_seq.c
net/ipv6/tcp_ipv6.c
include/net/tcp.h
net/ipv4/tcp_ipv4.c