neigh_parms_net
net = neigh_parms_net(n->parms);
if ((p->dev && p->dev->ifindex == ifindex && net_eq(neigh_parms_net(p), net)) ||
if (!net_eq(neigh_parms_net(p), net))
struct net *net = neigh_parms_net(p);
t->sysctl_header = register_net_sysctl_sz(neigh_parms_net(p),