Date: Wed, 18 Sep 2002 01:22:18 -0700 From: Sean Chittenden <seanc@FreeBSD.org> To: freebsd-ipfw@FreeBSD.org Subject: Increasing the hash table sizes for dummynet... Message-ID: <20020918082218.GJ99484@perrin.int.nxad.com>
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The attached patch updates the max size for dummynet pipes to 65K
instead of 1024. Comments? -sc
--=20
Sean Chittenden
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Index: sys/netinet/ip_dummynet.c
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
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=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
RCS file: /home/ncvs/src/sys/netinet/ip_dummynet.c,v
retrieving revision 1.52
diff -u -r1.52 ip_dummynet.c
--- sys/netinet/ip_dummynet.c 15 Aug 2002 16:53:43 -0000 1.52
+++ sys/netinet/ip_dummynet.c 18 Sep 2002 08:20:24 -0000
@@ -1463,8 +1463,8 @@
l =3D dn_hash_size;
if (l < 4)
l =3D 4;
- else if (l > 1024)
- l =3D 1024;
+ else if (l > DN_MAX_HASH_SIZE)
+ l =3D DN_MAX_HASH_SIZE;
x->rq_size =3D l;
} else /* one is enough for null mask */
x->rq_size =3D 1;
Index: sys/netinet/ip_dummynet.h
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
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RCS file: /home/ncvs/src/sys/netinet/ip_dummynet.h,v
retrieving revision 1.22
diff -u -r1.22 ip_dummynet.h
--- sys/netinet/ip_dummynet.h 15 Aug 2002 16:53:43 -0000 1.22
+++ sys/netinet/ip_dummynet.h 18 Sep 2002 08:20:24 -0000
@@ -77,6 +77,12 @@
#define OFFSET_OF(type, field) ((int)&( ((type *)0)->field) )
=20
/*
+ * The maximum hash table size for queues. This value must be a power
+ * of 2.
+ */
+#define DN_MAX_HASH_SIZE 65536
+
+/*
* A heap entry is made of a key and a pointer to the actual
* object stored in the heap.
* The heap is an array of dn_heap_entry entries, dynamically allocated.
Index: sbin/ipfw/ipfw.8
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RCS file: /home/ncvs/src/sbin/ipfw/ipfw.8,v
retrieving revision 1.112
diff -u -r1.112 ipfw.8
--- sbin/ipfw/ipfw.8 8 Sep 2002 09:01:08 -0000 1.112
+++ sbin/ipfw/ipfw.8 18 Sep 2002 08:20:24 -0000
@@ -1347,7 +1347,7 @@
.Xr sysctl 8
variable
.Em net.inet.ip.dummynet.hash_size ,
-allowed range is 16 to 1024.
+allowed range is 16 to 65536.
.Pp
.It Cm mask Ar mask-specifier
The
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