Messages in this thread Patch in this message | | | Subject | [PATCH] netfilter: remove padding from struct xt_match on 64bit builds | From | Richard Kennedy <> | Date | Fri, 12 Dec 2008 13:39:50 +0000 |
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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> ----
patch against v2.6.28-rc8 Compiled & running on AMD X2 desktop machine. regards Richard
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. */
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