netfilter: ebt_limit: add CONFIG_COMPAT support
ebt_limit structure is larger on 64 bit systems due to "long" type used in the (kernel-only) data section. Setting .compatsize is enough in this case, these values have no meaning in userspace. Signed-off-by: Florian Westphal <fwestphal@astaro.com>
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@ -84,6 +84,19 @@ static bool ebt_limit_mt_check(const struct xt_mtchk_param *par)
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return true;
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return true;
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}
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}
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#ifdef CONFIG_COMPAT
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/*
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* no conversion function needed --
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* only avg/burst have meaningful values in userspace.
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*/
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struct ebt_compat_limit_info {
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compat_uint_t avg, burst;
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compat_ulong_t prev;
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compat_uint_t credit, credit_cap, cost;
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};
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#endif
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static struct xt_match ebt_limit_mt_reg __read_mostly = {
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static struct xt_match ebt_limit_mt_reg __read_mostly = {
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.name = "limit",
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.name = "limit",
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.revision = 0,
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.revision = 0,
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@ -91,6 +104,9 @@ static struct xt_match ebt_limit_mt_reg __read_mostly = {
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.match = ebt_limit_mt,
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.match = ebt_limit_mt,
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.checkentry = ebt_limit_mt_check,
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.checkentry = ebt_limit_mt_check,
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.matchsize = sizeof(struct ebt_limit_info),
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.matchsize = sizeof(struct ebt_limit_info),
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#ifdef CONFIG_COMPAT
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.compatsize = sizeof(struct ebt_compat_limit_info),
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#endif
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.me = THIS_MODULE,
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.me = THIS_MODULE,
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};
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};
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