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Instrument UDP PCB hashing to see how often the hash lookup is effective

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for incoming packets.
This commit is contained in:
Garrett Wollman 1996-06-05 17:20:35 +00:00
parent 58639ed39a
commit c611d82e64
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=16143
2 changed files with 4 additions and 2 deletions
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3
sys/netinet/udp_usrreq.c
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@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)udp_usrreq.c 8.6 (Berkeley) 5/23/95
* $Id: udp_usrreq.c,v 1.25 1996/05/02 05:54:14 fenner Exp $
* $Id: udp_usrreq.c,v 1.26 1996/05/09 20:15:26 wollman Exp $
*/
#include <sys/param.h>
@ -276,6 +276,7 @@ udp_input(m, iphlen)
* ...and if that fails, do a wildcard search.
*/
if (inp == NULL) {
udpstat.udpps_pcbhashmiss++;
inp = in_pcblookup(&udb, ip->ip_src, uh->uh_sport, ip->ip_dst,
uh->uh_dport, INPLOOKUP_WILDCARD);
}

3
sys/netinet/udp_var.h
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)udp_var.h 8.1 (Berkeley) 6/10/93
* $Id: udp_var.h,v 1.7 1995/11/16 09:51:07 bde Exp $
* $Id: udp_var.h,v 1.8 1995/12/16 02:14:22 bde Exp $
*/
#ifndef _NETINET_UDP_VAR_H_
@ -66,6 +66,7 @@ struct udpstat {
u_long udps_noportbcast; /* of above, arrived as broadcast */
u_long udps_fullsock; /* not delivered, input socket full */
u_long udpps_pcbcachemiss; /* input packets missing pcb cache */
u_long udpps_pcbhashmiss; /* input packets not for hashed pcb */
/* output statistics: */
u_long udps_opackets; /* total output packets */
};