svn commit: r349979 - head/sys/contrib/ipfilter/netinet

[Cy Schubert]

Author: cy
Date: Sun Jul 14 02:46:30 2019
New Revision: 349979
URL: https://svnweb.freebsd.org/changeset/base/349979

Log:
  Recycle the unused FR_CMPSIZ macro which became orphaned in ipfilter 5
  prior to its import into FreeBSD. This macro calculates the size to be
  compared within the frentry structure. The ipfilter 4 version of the
  macro calculated the compare size based upon the static size of the
  frentry struct. Today it uses the ipfilter 5 method of calculating the
  size based upon the new to ipfilter 5 fr_size value found in the
  frentry struct itself.
  
  No effective change in code is intended.
  
  MFC after:	1 week

Modified:
  head/sys/contrib/ipfilter/netinet/fil.c
  head/sys/contrib/ipfilter/netinet/ip_fil.h

Modified: head/sys/contrib/ipfilter/netinet/fil.c
==============================================================================
--- head/sys/contrib/ipfilter/netinet/fil.c	Sun Jul 14 02:46:26 2019	(r349978)
+++ head/sys/contrib/ipfilter/netinet/fil.c	Sun Jul 14 02:46:30 2019	(r349979)
@@ -4436,8 +4436,8 @@ ipf_rule_compare(frentry_t *fr1, frentry_t *fr2)
 		return (2);
 	if (fr1->fr_dsize != fr2->fr_dsize)
 		return (3);
-	if (bcmp((char *)&fr1->fr_func, (char *)&fr2->fr_func,
-		 fr1->fr_size - offsetof(struct frentry, fr_func)) != 0)
+	if (bcmp((char *)&fr1->fr_func, (char *)&fr2->fr_func, FR_CMPSIZ(fr1))
+	    != 0)
 		return (4);
 	if (fr1->fr_data && !fr2->fr_data)
 		return (5);

Modified: head/sys/contrib/ipfilter/netinet/ip_fil.h
==============================================================================
--- head/sys/contrib/ipfilter/netinet/ip_fil.h	Sun Jul 14 02:46:26 2019	(r349978)
+++ head/sys/contrib/ipfilter/netinet/ip_fil.h	Sun Jul 14 02:46:30 2019	(r349979)
@@ -827,7 +827,7 @@ typedef	struct	frentry {
 
 #define	FR_NOLOGTAG	0
 
-#define	FR_CMPSIZ	(sizeof(struct frentry) - \
+#define	FR_CMPSIZ(_f)	((_f)->fr_size - \
 			 offsetof(struct frentry, fr_func))
 #define	FR_NAME(_f, _n)	(_f)->fr_names + (_f)->_n