Author: cy
Date: Mon Aug 12 02:42:47 2019
New Revision: 350882
URL: https://svnweb.freebsd.org/changeset/base/350882
Log:
Initialize the frentry (the control block that defines a rule) checksum
to zero. Matching checksums save time and effort by mitigating the need
for full rule compare.
MFC after: 3 days
Modified:
head/sys/contrib/ipfilter/netinet/fil.c
Modified: head/sys/contrib/ipfilter/netinet/fil.c
==============================================================================
--- head/sys/contrib/ipfilter/netinet/fil.c Sun Aug 11 23:54:52 2019
(r350881)
+++ head/sys/contrib/ipfilter/netinet/fil.c Mon Aug 12 02:42:47 2019
(r350882)
@@ -4973,7 +4973,7 @@ frrequest(softc, unit, req, data, set, makecopy)
* (this meaning no pointers are included).
*/
pp = (u_int *)(fp->fr_caddr + fp->fr_dsize);
- for (p = (u_int *)fp->fr_data; p < pp; p++)
+ for (fp->fr_cksum = 0, p = (u_int *)fp->fr_data; p < pp; p++)
fp->fr_cksum += *p;
WRITE_ENTER(&softc->ipf_mutex);
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