CTRL_ATTR_MCAST_GRP_MAX
struct nlattr *tb_mcgrp[CTRL_ATTR_MCAST_GRP_MAX + 1];
nla_parse(tb_mcgrp, CTRL_ATTR_MCAST_GRP_MAX,
struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
group_attr < CTRL_ATTR_MCAST_GRP_MAX; group_attr++) {
struct nlattr *tb_mcgrp[CTRL_ATTR_MCAST_GRP_MAX + 1];
nla_parse(tb_mcgrp, CTRL_ATTR_MCAST_GRP_MAX,