On Fri, 25 Nov 2022 20:11:27 +0800 Firo Yang wrote: > +#define SCTP_RTO_MIN_IDX 1 > +#define SCTP_RTO_MAX_IDX 2 > +#define SCTP_PF_RETRANS_IDX 3 > +#define SCTP_PS_RETRANS_IDX 4 Use these to index the entries, please, like this: struct bla table[] = { [MY_INDEX_ONE] = { .whatever = 1, }, [MY_INDEX_TWO] = { .fields = 2, }, { .there = 3, }, { .are = 4, }, }; I think that works even without all entries in the table having the index.. ? > static struct ctl_table sctp_net_table[] = { > { > .procname = "rto_initial", > @@ -112,6 +122,24 @@ static struct ctl_table sctp_net_table[] = { > .extra1 = &init_net.sctp.rto_min, > .extra2 = &timer_max > }, > + { > + .procname = "pf_retrans", > + .data = &init_net.sctp.pf_retrans, > + .maxlen = sizeof(int), > + .mode = 0644, > + .proc_handler = proc_dointvec_minmax, > + .extra1 = SYSCTL_ZERO, > + .extra2 = &init_net.sctp.ps_retrans, > + }, > + { > + .procname = "ps_retrans", > + .data = &init_net.sctp.ps_retrans, > + .maxlen = sizeof(int), > + .mode = 0644, > + .proc_handler = proc_dointvec_minmax, > + .extra1 = &init_net.sctp.pf_retrans, > + .extra2 = &ps_retrans_max, > + },