Extern or forward variable declaration at include/net/icmp.h, line 39 References: drivers/net/ppp/pptp.c, line 170 drivers/net/ppp/pptp.c, line 205 drivers/net/ppp/pptp.c, line 295 drivers/net/ppp/pptp.c, line 379 net/ipv4/cipso_ipv4.c, line 380 net/ipv4/cipso_ipv4.c, line 1617 net/ipv4/cipso_ipv4.c, line 1783 net/ipv4/cipso_ipv4.c, line 2217 net/ipv4/cipso_ipv4.c, line 2295 net/ipv4/cipso_ipv4.c, line 2335 net/ipv4/ip_forward.c, line 42 net/ipv4/ip_forward.c, line 55 net/ipv4/ip_options.c, line 43 net/ipv4/ip_options.c, line 90 net/ipv4/ip_options.c, line 213 net/ipv4/ip_options.c, line 247 net/ipv4/ip_options.c, line 260 net/ipv4/ip_options.c, line 558 net/ipv4/ip_options.c, line 605 net/ipv4/ip_sockglue.c, line 61 net/ipv4/ip_sockglue.c, line 70 net/ipv4/ip_sockglue.c, line 76 net/ipv4/ip_sockglue.c, line 81 net/ipv4/ip_sockglue.c, line 91 net/ipv4/ip_sockglue.c, line 108 net/ipv4/ip_sockglue.c, line 126 net/ipv4/ip_sockglue.c, line 148 net/ipv4/ip_sockglue.c, line 302 net/ipv4/ip_sockglue.c, line 336 net/ipv4/ip_sockglue.c, line 374 net/ipv4/ip_sockglue.c, line 1037 net/ipv4/netfilter/ipt_REJECT.c, line 36 net/ipv4/netfilter/ipt_REJECT.c, line 38 net/ipv4/netfilter/ipt_REJECT.c, line 129 net/ipv4/netfilter/ipt_REJECT.c, line 135 net/ipv4/tunnel4.c, line 90 net/ipv4/tunnel4.c, line 109 net/ipv4/tunnel4.c, line 128 net/ipv4/tunnel4.c, line 138 net/ipv6/ah6.c, line 304 net/ipv6/ah6.c, line 334 net/ipv6/ah6.c, line 342 net/ipv6/ah6.c, line 455 net/ipv6/ah6.c, line 486 net/ipv6/ah6.c, line 506 net/ipv6/ah6.c, line 613 net/ipv6/ipcomp6.c, line 57 net/l2tp/l2tp_eth.c, line 93 net/l2tp/l2tp_eth.c, line 140 net/l2tp/l2tp_ip6.c, line 128 net/l2tp/l2tp_ip6.c, line 441 net/l2tp/l2tp_ip6.c, line 460 net/l2tp/l2tp_ip6.c, line 659 net/sched/act_nat.c, line 105 net/sched/act_nat.c, line 269