Re: [PATCH v3 2/2] netfilter: Create revision 2 of xt_hashlimit to support higher pps rates

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On Thursday 2016-09-22 18:43, Vishwanath Pai wrote:
>+struct hashlimit_cfg2 {
>+	__u32 mode;	  /* bitmask of XT_HASHLIMIT_HASH_* */
>+	__u64 avg;    /* Average secs between packets * scale */
>+	__u64 burst;  /* Period multiplier for upper limit. */

This would have different sizes between i386 and x86_64,
necessiting additional compat functions. It should be padded
or reordered instead.

>+
>+	/* user specified */
>+	__u32 size;		/* how many buckets */
>+	__u32 max;		/* max number of entries */
>+	__u32 gc_interval;	/* gc interval */
>+	__u32 expire;	/* when do entries expire? */
>+
>+	__u8 srcmask, dstmask;
>+};
>+
>+struct xt_hashlimit_mtinfo2 {
>+	char name[NAME_MAX];
>+	struct hashlimit_cfg2 cfg;
>+
>+	/* Used internally by the kernel */
>+	struct xt_hashlimit_htable *hinfo __attribute__((aligned(8)));
>+};

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