From 6fbfc9688448aac064edbaccb5d30ecd565a9105 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Fri, 20 Jan 2006 11:57:07 -0800 Subject: [PATCH] [NETFILTER]: Unbreak x-tables on x86. x86 defines __alignof__(long long) as 8 yet it gives 4 for a struct containing a long long, ho hum... so my simplified form doesn't work everywhere. So use Harald Welte's original patch, which should work on all platforms. Signed-off-by: David S. Miller --- include/linux/netfilter/x_tables.h | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/include/linux/netfilter/x_tables.h b/include/linux/netfilter/x_tables.h index 59ff6c430c..6500d4e59d 100644 --- a/include/linux/netfilter/x_tables.h +++ b/include/linux/netfilter/x_tables.h @@ -19,7 +19,21 @@ struct xt_get_revision /* For standard target */ #define XT_RETURN (-NF_REPEAT - 1) -#define XT_ALIGN(s) (((s) + (__alignof__(u_int64_t)-1)) & ~(__alignof__(u_int64_t)-1)) +/* this is a dummy structure to find out the alignment requirement for a struct + * containing all the fundamental data types that are used in ipt_entry, + * ip6t_entry and arpt_entry. This sucks, and it is a hack. It will be my + * personal pleasure to remove it -HW + */ +struct _xt_align +{ + u_int8_t u8; + u_int16_t u16; + u_int32_t u32; + u_int64_t u64; +}; + +#define XT_ALIGN(s) (((s) + (__alignof__(struct _xt_align)-1)) \ + & ~(__alignof__(struct _xt_align)-1)) /* Standard return verdict, or do jump. */ #define XT_STANDARD_TARGET "" -- 2.39.5