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Use 5 times RTO.Max as the default for the shutdown guard timer

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as required by RFC 4960. The sysctl variable can be used to
overwrite this.

Discussed with:	rrs
MFC after:	1 week
This commit is contained in:
Michael Tuexen 2015-08-29 17:26:29 +00:00
parent 7278725be5
commit 2e2d67945a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=287294
3 changed files with 7 additions and 7 deletions
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4
sys/netinet/sctp_constants.h
View File

@ -612,10 +612,6 @@ __FBSDID("$FreeBSD$");
/* 30 seconds + RTO (in ms) */
#define SCTP_HB_DEFAULT_MSEC 30000
/* Max time I will wait for Shutdown to complete */
#define SCTP_DEF_MAX_SHUTDOWN_SEC 180
/*
* This is how long a secret lives, NOT how long a cookie lives how many
* ticks the current secret will live.

4
sys/netinet/sctp_sysctl.h
View File

@ -291,10 +291,10 @@ struct sctp_sysctl {
#define SCTPCTL_PMTU_RAISE_TIME_DEFAULT SCTP_DEF_PMTU_RAISE_SEC
/* shutdown_guard_time: Default shutdown guard timer in seconds */
#define SCTPCTL_SHUTDOWN_GUARD_TIME_DESC "Default shutdown guard timer in seconds"
#define SCTPCTL_SHUTDOWN_GUARD_TIME_DESC "Shutdown guard timer in seconds (0 means 5 times RTO.Max)"
#define SCTPCTL_SHUTDOWN_GUARD_TIME_MIN 0
#define SCTPCTL_SHUTDOWN_GUARD_TIME_MAX 0xFFFFFFFF
#define SCTPCTL_SHUTDOWN_GUARD_TIME_DEFAULT SCTP_DEF_MAX_SHUTDOWN_SEC
#define SCTPCTL_SHUTDOWN_GUARD_TIME_DEFAULT 0
/* secret_lifetime: Default secret lifetime in seconds */
#define SCTPCTL_SECRET_LIFETIME_DESC "Default secret lifetime in seconds"

6
sys/netinet/sctputil.c
View File

@ -2123,7 +2123,11 @@ sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
if (stcb == NULL) {
return;
}
to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN];
if (inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] == 0) {
to_ticks = 5 * MSEC_TO_TICKS(stcb->asoc.maxrto);
} else {
to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN];
}
tmr = &stcb->asoc.shut_guard_timer;
break;
case SCTP_TIMER_TYPE_STRRESET: