igmp6_mc_iter_state
#define igmp6_mc_seq_private(seq) ((struct igmp6_mc_iter_state *)(seq)->private)
struct igmp6_mc_iter_state *state = igmp6_mc_seq_private(seq);
struct igmp6_mc_iter_state *state = igmp6_mc_seq_private(seq);
struct igmp6_mc_iter_state *state = igmp6_mc_seq_private(seq);
struct igmp6_mc_iter_state *state = igmp6_mc_seq_private(seq);
sizeof(struct igmp6_mc_iter_state)))