Extern or forward variable declaration at include/net/tcp.h, line 211 References: include/net/tcp.h, line 211 net/ipv4/syncookies.c, line 25 net/ipv4/syncookies.c, line 268 net/ipv4/sysctl_net_ipv4.c, line 347 net/ipv4/tcp_ipv4.c, line 1236 net/ipv4/tcp_ipv4.c, line 1315 net/ipv4/tcp_minisocks.c, line 35 net/ipv4/tcp_minisocks.c, line 36 net/ipv6/syncookies.c, line 24 net/ipv6/syncookies.c, line 176 net/ipv6/tcp_ipv6.c, line 523 net/ipv6/tcp_ipv6.c, line 1184