__ip_options_echo
int __ip_options_echo(struct net *net, struct ip_options *dopt,
return __ip_options_echo(net, dopt, skb, &IPCB(skb)->opt);
if (dopt && __ip_options_echo(net, &dopt->opt, skb, opt)) {
if (__ip_options_echo(net, &icmp_param->replyopts.opt, skb_in,
if (__ip_options_echo(net, &replyopts->opt, skb, sopt))