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| author | wollman <wollman@FreeBSD.org> | 1995-02-14 23:04:52 +0000 |
|---|---|---|
| committer | wollman <wollman@FreeBSD.org> | 1995-02-14 23:04:52 +0000 |
| commit | e3defa4503d0fce9ea8650a9557e03073e3aef45 (patch) | |
| tree | 8c512b48a982f2c32fad6db890c8d4e3c0ebb9a6 /sys/netinet/in.h | |
| parent | 0044192fdf92b0b40aa3c4f34cb2078b1d6a4747 (diff) | |
| download | FreeBSD-src-e3defa4503d0fce9ea8650a9557e03073e3aef45.zip FreeBSD-src-e3defa4503d0fce9ea8650a9557e03073e3aef45.tar.gz | |
Attempt to make the host route cache a bit smarter under conditions of
high load:
1) If there ever get to be more than net.inet.ip.rtmaxcache entries
in the cache, in_rtqtimo() will reduce net.inet.ip.rtexpire by
1/3 and do another round, unles net.inet.ip.rtexpire is less than
net.inet.ip.rtminexpire, and never more than once in ten minutes
(rtq_timeout).
2) If net.inet.ip.rtexpire is set to zero, don't bother to cache
anything.
Diffstat (limited to 'sys/netinet/in.h')
| -rw-r--r-- | sys/netinet/in.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/sys/netinet/in.h b/sys/netinet/in.h index 3164a09..b4fd19f 100644 --- a/sys/netinet/in.h +++ b/sys/netinet/in.h @@ -31,7 +31,7 @@ * SUCH DAMAGE. * * @(#)in.h 8.3 (Berkeley) 1/3/94 - * $Id: in.h,v 1.5 1994/12/14 19:06:36 wollman Exp $ + * $Id: in.h,v 1.6 1994/12/21 17:23:59 wollman Exp $ */ #ifndef _NETINET_IN_H_ @@ -227,7 +227,9 @@ struct ip_mreq { #define IPCTL_DEFMTU 4 /* default MTU */ #endif #define IPCTL_RTEXPIRE 5 /* cloned route expiration time */ -#define IPCTL_MAXID 6 +#define IPCTL_RTMINEXPIRE 6 /* min value for expiration time */ +#define IPCTL_RTMAXCACHE 7 /* trigger level for dynamic expire */ +#define IPCTL_MAXID 8 #define IPCTL_NAMES { \ { 0, 0 }, \ @@ -236,6 +238,8 @@ struct ip_mreq { { "ttl", CTLTYPE_INT }, \ { "mtu", CTLTYPE_INT }, \ { "rtexpire", CTLTYPE_INT }, \ + { "rtminexpire", CTLTYPE_INT }, \ + { "rtmaxcache", CTLTYPE_INT }, \ } |
