netfilter 09/09: remove padding from struct xt_match on 64bit builds

Patrick McHardy
2009-01-12T10:06:11Z

commit 269e837197ecee6b37ed3d83b1ddc582f6a53947
Author: Richard Kennedy <richard@rsk.demon.co.uk>
Date: Mon Jan 12 10:52:48 2009 +0100

netfilter: remove padding from struct xt_match on 64bit builds

reorder struct xt_match to remove 8 bytes of padding and make its size
128 bytes.

This saves a small amount of data space in each of the xt netfilter
modules and fits xt_match in one 128 byte cache line.

Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk>
Signed-off-by: Patrick McHardy <kaber@trash.net>

diff --git a/include/linux/netfilter/x_tables.h b/include/linux/netfilter/x_tables.h
index e52ce47..c7ee874 100644
--- a/include/linux/netfilter/x_tables.h
+++ b/include/linux/netfilter/x_tables.h
@@ -270,6 +270,7 @@ struct xt_match
struct list_head list;

const char name[XT_FUNCTION_MAXNAMELEN-1];
+ u_int8_t revision;

/* Return true or false: return FALSE and set *hotdrop = 1 to
force immediate packet drop. */
@@ -302,7 +303,6 @@ struct xt_match
unsigned short proto;

unsigned short family;
- u_int8_t revision;
};

/* Registration hooks for targets. */